Dr. Carol J.V. Fisher's Homepage
This page was maintained at Miss Hall's School from 2005 to 2008.
Use it as a sample of how Algebra Pinball can be run;
also use it to get a sense of fastest times for each web exercise.

ALGEBRA PINBALL

Know how a pinball machine always reports the top scores?
You can compete with others for the top ALGEBRA PINBALL scores!

Here are the steps to submit your FAST scores:
  • Time yourself on one of the exercises in the ALGEBRA PINBALL table below.
     
  • You must do at least 20 problems.
     
  • The number correct must be at least 90% of the number attempted. This is to prevent you from just clicking quickly until you get specific problem(s) that you know how to solve.
     
  • Print (File–Print) the summary sheet that you get when you press the "End Timing" button.
    A sample of this summary sheet is shown on the right.
     
  • Fill in the required information on this summary sheet (NAME, LOCATION IN WORLD, etc.)
     
  • Of course, you'll only submit sheets that BEAT the times listed in the chart below.
     
  • A maximum of TWO timing sheets may be submitted per person, per day.
     
  • HAVE FUN!!! DO MATH!!!
     
  • Japanese "Algebra Pinball" instructions, written by Rurika Oka

ALL WEB EXERCISES OPEN IN A NEW WINDOW
 
EXERCISE BEST SCORE at
MISS HALL'S SCHOOL
FRIENDS and FAMILY of
MISS HALL'S SCHOOL
FISHER CLASSES,
2007–2008
Section 1:
Expressions versus Sentences
Sunny Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
January 27, 2006
0.7 seconds per correct problem

Click here for previous scores
Sunho Roh
Cornell University
Ithaca, New York, USA
February 16, 2007
0.8 seconds per correct problem

Click here for previous scores
Ji Yune Kim
Miss Hall's School
Pittsfield, MA, USA
January 17, 2008
0.7 secs/correct problem
Click here for previous scores
Section 2:
Basic Addition Practice
Jinghui Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
May 3, 2008
0.6 seconds per correct problem

Click here for previous scores
Suk Ryu
Solebury High School
New Hope, Pennsylvania, USA
May 21, 2007
1.4 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, MA, USA
October 6, 2007
1.1 secs/correct problem

Click here for previous scores
Section 2:
Multiplication
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 3, 2007
1.0 seconds per correct problem

Click here for previous scores
Suk Ryu
Solebury High School
New Hope, Pennsylvania, USA
May 21, 2007
1.4 seconds per correct problem
Click here for previous scores
Woo Ji Kim
Miss Hall's School
Pittsfield, MA, USA
October 1, 2007
1.1 secs/correct problem

Click here for previous scores
Section 2:
Divisibility
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 7, 2008
1.8 seconds per correct problem

Click here for previous scores
Alan Luo
Shanghai University of Engineering and Science
September 24, 2007
1.1 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
April 9, 2008
3.0 seconds per correct problem

Click here for previous scores
Section 3:
Deciding if a number is a whole number, an integer, etc.
Masha Jones
Miss Hall's School
Pittsfield, Massachusetts, USA
January 4, 2006
1.4 seconds per correct problem

Click here for previous scores
Seung Hee Lee
Yeon Seong Middle School
Incheon, South Korea
age 15
October 10, 2007
1.9 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, MA, USA
October 6, 2007
1.5 secs/correct problem

Click here for previous scores
Section 4:
Addition of Signed Numbers
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 9, 2007
1.1 seconds per correct problem

Click here for previous scores
Paul Yoon
Solebury School
New Hope, Pennsylvania, USA
January 23, 2008
1.9 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, MA, USA
October 6, 2007
1.3 secs/correct problem

Click here for previous scores
Section 5:
Subtraction of Signed Numbers
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 3, 2007
1.1 seconds per correct problem

Click here for previous scores
Paul Yoon
Solebury School
New Hope, Pennsylvania, USA
January 23, 2008
1.9 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 27, 2008
1.6 seconds per correct problem

Click here for previous scores
Section 5:
Mixed Addition and Subtraction of Signed Numbers
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
April 18, 2007
1.8 seconds per correct problem

Click here for previous scores
Xiao Luo
China
October 12, 2007
1.7 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, MA, USA
October 6, 2007
2.1 secs/correct problem

Click here for previous scores
Section 6:
Writing Fractions with a Denominator of 2 in Decimal Form
Sunny Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
June 2, 2006
1.0 seconds per correct problem

Click here for previous scores
Dong Lim Lee
J-am Elementary School
Seoul, Korea
January 27, 2006
1.9 seconds per correct problem
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
January 16, 2008
1.0 seconds per correct problem

Click here for previous scores
Section 6:
 Average of Two Signed Numbers
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
January 16, 2008
1.4 seconds per correct problem

Click here for previous scores
Suk Ryu
Solebury High School
New Hope, Pennsylvania, USA
May 21, 2007
2.7 seconds per correct problem

Click here for previous scores
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 29, 2008
1.9 seconds per correct problem

Click here for previous scores
Section 6:
 Average of Three Signed Numbers
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 9, 2007
1.4 seconds per correct problem

Click here for previous scores
Seung Hee Lee
Yeon Seong Middle School
Incheon, South Korea
October 10, 2007
2.4 seconds per correct problem

Click here for previous scores
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 1, 2007
1.5 seconds per correct problem

Click here for previous scores
Section 7:
Identifying Place Values
Jinghui Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
May 3, 2008
1.4 seconds per correct problem

Click here for previous scores
Dong Lim Lee
J-am Elementary School
Seoul, Korea
June 2, 2006
3.2 seconds per correct problem

Click here for previous scores
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
March 31, 2008
1.6 seconds per correct problem

Click here for previous scores
Section 7:
Multiplying by Powers of Ten
Jinghui Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
May 3, 2008
1.4 seconds per correct problem

Click here for previous scores
Ricky Choi
Dunn School
Age 17
USA
2.0 seconds per correct problem
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
January 22, 2008
1.7 seconds per correct problem

Click here for previous scores
Section 8:
Changing Decimals to Fractions
Jinghui Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
May 3, 2008
1.6 seconds per correct problem

Click here for previous scores
Dong Lim Lee
J-am Elementary School
Seoul, Korea
June 2, 2006
3.2 seconds per correct problem

Click here for previous scores
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
February 26, 2008
1.8 seconds per correct problem

Click here for previous scores
Section 8:
Multiplying and Dividing Decimals by Powers of Ten
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 26, 2008
2.6 seconds per correct problem

Click here for previous scores
Alan Luo
Shanghai University of Engineering and Science
Shanghai, China
April 1, 2008
2.7 seconds per correct problem

Click here for previous scores
Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
December 19, 2007
3.2 seconds per correct problem

Click here for previous scores
Section 8:
Changing Decimals to Percents
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 6, 2007
1.2 seconds per correct problem

Click here for previous scores
Dong Lim Lee
J-am Elementary School
Seoul, Korea
May 28, 2006
3.0 seconds per correct problem

Click here for previous scores
Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
December 12, 2007
1.2 seconds per correct problem

Click here for previous scores
Section 8:
Changing Percents to Decimals
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
May 5, 2007
1.2 seconds per correct problem

Click here for previous scores
Rina Nakazawa
Shirayuri Gakuen High School
Chiyoda-ku Tokyo, Japan
March 31, 2006
1.9 seconds per correct problem
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 6, 2007
1.3 seconds per correct problem

Click here for previous scores
Section 9:
Interval and List Notation
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
March 5, 2007
1.2 seconds per correct problem

Click here for previous scores
Seung Hee Lee
Yeon Seong Middle School
Incheon, South Korea
October 10, 2007
2.3 seconds per correct problem

Click here for previous scores
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2007
1.2 seconds per correct problem

Click here for previous scores
Section 10:
  Reading Set Notation
Jinghui Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
May 3, 2008
1.0 seconds per correct problem

Click here for previous scores
Ricky Choi
Dunn School
Age 17
USA
1.9 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
March 11, 2008
1.4 seconds per correct problem

Click here for previous scores
Section 10:
  Solving Simple Sentences By Inspection
Jinghui Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
May 3, 2008
1.1 seconds per correct problem

Click here for previous scores
Prakash Malkani
Pittsfield, Massachusetts, USA
January 11, 2007
4.7 seconds per correct problem

Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
October 23, 2007
1.2 seconds per correct problem

Click here for previous scores
Section 10:
  Using Mathematical Conventions
Jinghui Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
May 3, 2008
1.8 seconds per correct problem

Click here for previous scores
Neel Mittal
Herricks High School
New York, USA
January 24, 2007
7.8 seconds per correct problem
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 4, 2008
1.9 seconds per correct problem

Click here for previous scores
Section 11:
  Rewriting Fractions as a Whole Number Plus a Fraction
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 9, 2008
2.2 seconds per correct problem

Click here for previous scores
Prakash Malkani
Pittsfield, Massachusetts, USA
January 11, 2007
5.9 seconds per correct problem

 
Click here for previous scores
Section 11:
  Locating Fractions on a Number Line
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
October 19, 2007
2.0 seconds per correct problem

Click here for previous scores
Courtney Fitch
Algonquin Regional High School
Southborough, Massachusetts, USA
Age 17
January 27, 2007
19.6 seconds per correct answer

Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
March 11, 2008
2.0 seconds per correct problem

Click here for previous scores
Section 11:
Fractions Involving Zero
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
September 27, 2007
0.7 seconds per correct problem

Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
September 27, 2007
0.7 seconds per correct problem

Click here for previous scores
Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 13, 2007
1.1 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
September 27, 2007
0.8 seconds per correct problem

Click here for previous scores
Section 12:
Finding Reciprocals
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
September 27, 2007
1.1 seconds per correct problem
Click here for previous scores
Mark Lawrence
Winchendon, Massachusetts, USA
November 28, 2006
3.0 seconds per correct problem
Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2007
1.2 seconds per correct problem

Click here for previous scores
Section 12:
Determining if a Product is Positive or Negative
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
March 5, 2007
1.0 seconds per correct problem

Click here for previous scores
Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 13, 2007
1.9 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 3, 2007
1.1 seconds per correct problem

Click here for previous scores
Section 12:
  Multiplying and Dividing Fractions
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
March 12, 2007
2.2 seconds per correct problem

Click here for previous scores
Alan Luo
Shanghai University of Engineering and Science
Shanghai, China
April 1, 2008
1.9 seconds per correct problem
Click here for previous scores
Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 23, 2007
2.8 seconds per correct problem

Click here for previous scores
Section 12:
  Practice with the Form a(b/c)
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
February 29, 2008
0.7 seconds per correct problem
Click here for previous scores
Prakash Malkani
Pittsfield, Massachusetts, USA
February 14, 2007
2.3 seconds per correct problem
Click here for previous scores
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
March 11, 2008
1.0 seconds per correct problem

Click here for previous scores
Section 12:
  More Practice with the Form a(b/c)
Elaine Zhang
Miss Hall's School
Pittsfield, Massachusetts, USA
December 4, 2007
1.5 seconds per correct problem

Click here for previous scores
Jeffrey Ellis
Richmond, Massachusetts, USA
May 24, 2007
6.7 seconds per correct problem

Click here for previous scores
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 11, 2007
1.6 seconds per correct problem

Click here for previous scores
Section 13:
Practice With Multiples
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
February 13, 2008
0.7 seconds per correct problem

Click here for previous scores
Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 13, 2007
1.5 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 29, 2008
0.9 seconds per correct problem

Click here for previous scores
Section 13:
Finding Least Common Multiples
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
April 19, 2007
1.2 seconds per correct problem

Click here for previous scores
Paul Yoon
Solebury School
New Hope, Pennsylvania, USA
January 23, 2008
2.5 seconds per correct problem

Click here for previous scores
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
October 2, 2007
1.2 seconds per correct problem

Click here for previous scores
Section 13:
Renaming Fractions with a Specified Denominator
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
October 2, 2007
2.2 seconds per correct problem

Click here for previous scores
Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 12, 2007
5.6 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 3, 2007
2.4 seconds per correct problem

Click here for previous scores
Section 13:
Practice With Factors
Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 12, 2007
0.8 seconds per correct problem

Click here for previous scores
Paul Yoon
Solebury High School
New Hope, Pennsylvania, USA
January 23, 2008
1.2 seconds per correct problem

Click here for previous scores
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 10, 2007
0.9 seconds per correct problem

Click here for previous scores
Section 13:
 Adding and Subtracting Fractions
Sally Melville
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2006
5.1 seconds per correct problem

Prakash Malkani
Pittsfield, Massachusetts, USA
January 11, 2007
10.4 seconds per correct problem

Song E Park
Miss Hall's School
Pittsfield, Massachusetts, USA
October 4, 2007
5.7 seconds per correct problem

Click here for previous scores
Section 13:
Divisibility Equivalences
Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 18, 2007
2.0 seconds per correct problem

Click here for previous scores
Hana Rodrigs
Smith College
Northampton, Massachusetts, USA
December 14, 2006
4.1 seconds per correct problem

Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
March 31, 2008
2.2 seconds per correct problem

Click here for previous scores
Section 14:
Identifying Inequalities as True or False
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 24, 2007
0.9 seconds per correct problem

Click here for previous scores
Paul Yoon
Solebury School
New Hope, Pennsylvania, USA
January 23, 2008
1.5 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2007
1.0 seconds per correct problem

Click here for previous scores
Section 14:
Practice with the Phrases "at least" and "at most"
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 11, 2007
1.5 seconds per correct problem

Click here for previous scores
Mark Lawrence
Winchendon, Massachusetts, USA
November 28, 2006
3.2 seconds per correct problem

Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 1, 2007
1.7 seconds per correct problem

Click here for previous scores
Section 14:
Identifying Inequalities with Variables as True or False
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 23, 2007
0.9 seconds per correct problem

Click here for previous scores
Suk Ryu
Solebury High School
New Hope, Pennsylvania, USA
May 21, 2007
2.0 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 22, 2007
1.0 seconds per correct problem

Click here for previous scores
Section 14:
Solving Equations of the form  xy = 0 
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
May 5, 2007
1.8 seconds per correct problem

Click here for previous scores
Suk Ryu
Solebury High School
New Hope, Pennsylvania, USA
May 11, 2007
4.6 seconds per correct problem

Click here for previous scores
Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2007
2.3 seconds per correct problem

Click here for previous scores
Section 15:
  Recognizing Zero and One
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 19, 2007
1.0 seconds per correct problem

Click here for previous scores
Prakash Malkani
Pittsfield, Massachusetts, USA
January 11, 2007
3.7 seconds per correct problem

Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
1.0 seconds per correct problem

Section 16:
Writing Fractions in Simplest Form
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
March 5, 2007
1.7 seconds per correct problem

Click here for previous scores
Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
age 18
March 9, 2007
4.8 seconds per correct problem
Click here for previous scores
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
October 22, 2007
2.0 seconds per correct problem

Click here for previous scores
Section 16:
Deciding if a Fraction is a Finite or Infinite Repeating Decimal
Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 22, 2007
0.8 seconds per correct problem

Click here for previous scores
Hana Rodrigs
Smith College
Northampton, Massachusetts, USA
December 14, 2006
3.5 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 25, 2007
0.9 seconds per correct problem

Click here for previous scores
Section 16:
Deciding if Numbers are Equal or Approximately Equal
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 12, 2007
1.0 seconds per correct problem
Click here for previous scores
Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 13, 2007
2.8 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 16, 2007
1.1 seconds per correct problem

Click here for previous scores
Section 17:
Rounding Decimals to a Specified Number of Places
Soo Yoon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 4, 2007
2.3 seconds per correct problem

Click here for previous scores
KangXiong Luo
China
October 19, 2007
2.3 seconds per correct problem

Click here for previous scores
Song E Park
Miss Hall's School
Pittsfield, Massachusetts, USA
October 12, 2007
3.2 seconds per correct problem
Section 18:
Classifying Units as Length, Time, Volume, Weight/Mass
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 18, 2007
1.0 seconds per correct problem
Click here for previous scores
Yoo Ri Jang
Yeon Seong Middle School
Incheon, South Korea
age 17
October 8, 2007
1.7 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
December 4, 2007
1.0 seconds per correct problem

Click here for previous scores
Section 18:
Practice with Unit Abbreviations
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
September 26, 2007
1.0 seconds per correct problem
Click here for previous scores
Yoo Ri Jang
Yeon Seong Middle School
Incheon, South Korea
age 17
October 8, 2007
1.6 seconds per correct problem

Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 19, 2007
1.0 seconds per correct problem

Click here for previous scores
Section 18:
Practice with Unit Names
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 19, 2007
1.4 seconds per correct problem
Click here for previous scores
Katie Kellar
Taconic High School
Pittsfield, Massachusetts, USA
Age 16
May 15, 2007
2.6 seconds per correct problem

Click here for previous scores
Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2007
1.5 seconds per correct problem

Click here for previous scores
Section 18:
Practice with Unit Conversion Information
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 3, 2008
1.8 seconds per correct problem

Click here for previous scores
Neel Mittal
Herricks High School
New York, USA
January 26, 2007
10.0 seconds per correct problem
Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
March 3, 2008
15.9 seconds per correct problem

Click here for previous scores
Section 18:
One-Step Conversions
Sei Young Shin
Miss Hall's School
Pittsfield, Massachusetts, USA
March 9, 2007
4.5 seconds per correct problem

Click here for previous scores
Neel Mittal
Herricks High School
New York, USA
January 26, 2007
6.9 seconds per correct problem
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
November 29, 2007
6.2 seconds per correct problem

Click here for previous scores
Section 20:
Practice with Exponents
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
May 5, 2007
1.0 seconds per correct problem

Click here for previous scores
Seung Hee Lee
Yeon Seong Middle School
Incheon, South Korea
age 15
October 10, 2007
3.9 seconds per correct problem
Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
October 23, 2007
1.2 seconds per correct problem

Click here for previous scores
Section 20:
Practice with Order of Operations
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 10, 2008
2.6 seconds per correct problem
Click here for previous scores
Seung Hee Lee
Yeon Seong Middle School
Incheon, South Korea
age 15
October 10, 2007
2.6 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 23, 2007
4.3 seconds per correct problem

Click here for previous scores
Section 20:
Basic Exponent Practice with Fractions
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 29, 2008
1.4 seconds per correct problem

Click here for previous scores
Lisa Donfried
Richmond, MA, USA
January 23, 2008
4.8 seconds per correct problem
Click here for previous scores
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
March 31, 2008
1.7 seconds per correct problem

Click here for previous scores
Section 21:
practice with  xmxn = xm+n
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2007
0.9 seconds per correct problem
Click here for previous scores
Wan ho Roh
Sung Gwun Gown University
Korea
February 16, 2007
2.0 seconds per correct problem
Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 22, 2007
1.0 seconds per correct problem

Click here for previous scores
Section 21:
practice with  (xm)n = xmn
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
May 5, 2007
1.0 seconds per correct problem
Click here for previous scores
Wan ho Roh
Sung Gwun Gown University
Korea
February 16, 2007
1.9 seconds per correct problem

Click here for previous scores
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 22, 2007
1.1 seconds per correct problem

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Section 21:
practice with  xm/xn = xm-n
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 17, 2007
1.1 seconds per correct problem
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Wan ho Roh
Sung Gwun Gown University
Korea
February 16, 2007
2.1 seconds per correct problem

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Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
October 19, 2007
1.2 seconds per correct problem

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Section 21:
practice with  x-p = 1/xp
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 18, 2007
0.8 seconds per correct problem
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Wan ho Roh
Sung Gwun Gown University
Korea
February 16, 2007
1.7 seconds per correct problem
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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
October 22, 2007
0.8 seconds per correct problem

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Section 21:
one-step exponent law practice
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 14, 2007
1.1 seconds per correct problem
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Wan ho Roh
Sung Gwun Gown University
Korea
February 16, 2007
2.6 seconds per correct problem
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Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
March 31, 2008
1.5 seconds per correct problem

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Section 21:
 Multi-Step Exponent Law Practice
Rurika Oka
Miss Hall's School
Pittsfield, Massachusetts, USA
January 24, 2006
2.1 seconds per correct problem

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Rina Nakazawa
Shirayuri Gakuen High School
Chiyoda-ku Tokyo, Japan
January 8, 2006
5.2 seconds per correct problem
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
November 8, 2007
3.3 seconds per correct problem
Section 22:
  practice with radicals
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
March 6, 2008
1.0 seconds per correct problem

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Jeffrey Ellis
Richmond, Massachusetts, USA
May 24, 2007
5.0 seconds per correct problem
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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
April 3, 2008
1.9 seconds per correct problem

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Section 22:
practice with radicals (no MathPlayer version)
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
January 23, 2008
1.2 seconds per correct problem

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You Ri Jang
Inchon Art High School
In Cheon, South Korea
Age 18
February 13, 2007
4.8 seconds per correct problem
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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
March 3, 2008
1.3 seconds per correct problem

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Section 22:
  approximating radicals
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
January 21, 2008
2.8 seconds per correct problem

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Prakash Malkani
Pittsfield, Massachusetts, USA
January 15, 2007
3.1 seconds per correct problem
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 18, 2008
3.9 seconds per correct problem

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Section 22:
approximating radicals (no MathPlayer version)
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
November 7, 2007
2.7 seconds per correct problem

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Eung Keong Choi
Goo Jeong Middle School
Seoul, South Korea
age 16
2.3 seconds per correct problem

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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 7, 2008
3.1 seconds per correct problem

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Section 23:
practice with rational exponents
Amelie Dyzmann
Miss Hall's School
Pittsfield, Massachusetts, USA
October 25, 2006
2.9 seconds per correct problem
Olivia Weinstein
Rockport High School
Rockport, Massachusetts, USA
Age 16
16.6 seconds per correct problem
opens Tuesday,
OCT 30
Section 24:
practice with  x  and  -x
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
February 29, 2008
1.0 seconds per correct problem

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Anne Skakel
Southborough, Massachusetts, USA
Lenox, Massachusetts, USA
6.1 seconds per correct problem

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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
April 2, 2008
1.9 seconds per correct problem

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Section 24:
practice with products of signed variables
Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 18, 2007
1.1 seconds per correct problem

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Katie Kellar
Taconic High School
Pittsfield, Massachusetts, USA
age 16
May 15, 2007
4.1 seconds per correct problem

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Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
April 8, 2008
1.3 seconds per correct problem

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Section 24:
practice with the distributive law
Amelie Dyzmann
Miss Hall's School
Pittsfield, Massachusetts, USA
October 24, 2006
1.9 seconds per correct problem

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Soo Byung Lee
Goo Jung Middle School
Seoul, South Korea
February 12, 2007
9.7 seconds per correct problem
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 4, 2008
2.4 seconds per correct problem

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Section 25:
equal or opposites?
Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 10, 2007
0.9 seconds per correct problem

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Yoo Hee Ju
Dong Suk Girl's Middle School
Korea
February 16, 2007
3.1 seconds per correct problem
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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 30, 2007
1.0 seconds per correct problem

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Section 25:
recognizing the patterns xn and (-x)n
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 27, 2008
2.4 seconds per correct problem

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Suk Ryu
Solebury High School
New Hope, Pennsylvania, USA
Age 17
May 11, 2007
6.0 seconds per correct answer
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Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
March 7, 2008
4.3 seconds per correct problem

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Section 25:
writing expressions in the form kxn
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 27, 2008
1.5 seconds per correct problem

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Anne Skakel
Lenox, Massachusetts, USA
9.7 seconds per correct problem

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Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
November 12, 2007
2.6 seconds per correct problem

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Section 25:
writing more complicated expressions in the form kxn
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 25, 2008
2.0 seconds per correct problem

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Courtney Fitch
Algonquin Regional High School
Southborough, Massachusetts, USA
Age 17
14.0 seconds per correct problem

Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
November 9, 2007
3.1 seconds per correct problem

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Section 25:
writing quite complicated expressions in the form kxn
Sally Melville
Miss Hall's School
Pittsfield, Massachusetts, USA
November 6, 2006
5.4 seconds per correct problem
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opens Tuesday,
OCT 30
Section 26:
identifying variable parts and coefficients of terms
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
October 6, 2007
6.0 seconds per correct problem

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Courtney Fitch
Algonquin Regional High School
Southborough, Massachusetts, USA
Age 17
13.8 seconds per correct problem
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
December 4, 2007
6.4 seconds per correct problem

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Section 26:
combining like terms
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
January 10, 2008
4.7 seconds per correct problem
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Prakash Malkani
Pittsfield, Massachusetts, USA
January 11, 2007
13.2 seconds per correct problem

Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
January 21, 2008
4.8 seconds per correct problem

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Section 26:
simplifying expressions like  -a(3b - 2c - d
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
April 11, 2008
3.3 seconds per correct problem

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Courtney Fitch
Algonquin Regional High School
Southborough, Massachusetts, USA
Age 17
12.4 seconds per correct problem
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
February 13, 2008
4.9 seconds per correct problem

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Section 26:
basic FOIL
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
February 22, 2008
2.6 seconds per correct problem

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Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 12, 2007
10.5 seconds per correct problem
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
March 7, 2008
2.9 seconds per correct problems

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Section 26:
more complicated FOIL
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
April 8, 2008
5.3 seconds per correct problem

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Emily Ellis
Richmond Consolidated
Richmond, Massachusetts, USA
Age 13
May 24, 2007
18.8 seconds per correct problem
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Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
April 11, 2008
6.0 seconds per correct problem

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Section 26:
simplifying  (a + b)2  and  (a - b)2 
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
April 10, 2008
4.9 seconds per correct problem

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Tom Skakel
Lenox, Massachusetts, USA
November 29, 2007
11.4 seconds per correct problem

Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
January 16, 2008
5.5 seconds per correct problem

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Section 26:
simplifying expressions like  (a - b)(c + d - e
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
April 11, 2008
4.4 seconds per correct problem

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Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 13, 2007
14.8 seconds per correct problem
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Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
April 10, 2008
5.0 seconds per correct problem

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Section 27:
  practice with the mathematical words and, or,
and is equivalent to
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
November 29, 2007
1.2 seconds per correct problem

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Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
Age 18
March 9, 2007
4.3 seconds per correct problem
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 30, 2007
1.3 seconds per correct problem

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Section 28:
recognizing products and sums; identifying factors and terms
Sally Melville
Miss Hall's School
Pittsfield, Massachusetts, USA
December 11, 2006
3.6 seconds per correct problem
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Jeffrey Ellis
Richmond, Massachusetts, USA
May 24, 2007
11.2 seconds per correct problem

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Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
December 12, 2007
6.6 seconds per correct problem

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Section 28:
identifying common factors
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 7, 2008
2.0 seconds per correct problem

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Suk Ryu
New Hope, Pennsylvania, USA
May 11, 2007
6.8 seconds per correct problem

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Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
April 11, 2008
2.4 seconds per correct problem

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Section 28:
factoring simple expressions
Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
February 5, 2008
4.8 seconds per correct problem

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Cameron Skakel
Lenox, Massachusetts, USA
November 14, 2007
9.5 seconds per correct problem

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Ju Yeon Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
April 7, 2008
5.5 seconds per correct problem

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Section 29:
listing all the factors of a whole number
Seon Ah Yoon
Miss Hall's School
Pittsfield, Massachusetts, USA
March 9, 2007
3.7 seconds per correct problem
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Rurika Oka
United Kingdom
March 25, 2008
4.8 seconds per correct answer
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Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 30, 2007
5.9 seconds per correct problem
Section 29:
finding the greatest common factor of 2 or 3 numbers
Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 8, 2007
1.5 seconds per correct problem

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Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 13, 2007
2.9 seconds per correct problem

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Soo Yeon Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 9, 2007
1.8 seconds per correct problem

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Section 29:
finding the greatest common factor of variable expressions
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 11, 2008
3.4 seconds per correct problem
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Emily Ellis
Richmond Consolidated
Richmond, Massachusetts, USA
Age 13
May 24, 2007
12.3 seconds per correct problem
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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
January 9, 2008
4.6 seconds per correct problem

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Section 29:
factoring out the greatest common factor
Sei Young Shin
Miss Hall's School
Pittsfield, Massachusetts, USA
March 9, 2007
6.6 seconds per correct problem
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Adeline Ellis
Richmond, Massachusetts, USA
May 24, 2007
21.5 seconds per correct problem
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Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 2, 2008
8.4 seconds per correct problem

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Section 32:
solving simple linear equations with integer coefficients
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 10, 2008
2.1 seconds per correct problem

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Juan Pablo Mendoza
Wesleyan University
Middletown, CT, USA
March 13, 2007
6.7 seconds per correct problem
 
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Section 32:
solving more complicated linear equations with integer coefficients
Sally Melville
Miss Hall's School
Pittsfield, Massachusetts, USA
October 20, 2006
6.6 seconds per correct problem
posted 7/23/2006
opens Monday,
NOV 5
Section 34:
simplifying basic absolute value expressions
Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 4, 2007
1.2 seconds per correct problem

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Hong Kwan Soo
Korea
February 16, 2007
3.7 seconds per correct problem

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Kyung Eun Lee
Miss Hall's School
Pittsfield, Massachusetts, USA
December 6, 2007
1.2 seconds per correct problem

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Section 34:
determining the sign (plus or minus) of absolute value expressions
Suk Young Hong
Miss Hall's School
Pittsfield, Massachusetts, USA
February 14, 2007
0.9 seconds per correct problem

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Cameron Skakel
Monument Mountain Regional High School
Great Barrington, Massachusetts, USA
November 15, 2007
2.5 seconds per correct problem

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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
November 15, 2007
0.9 seconds per correct problem

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Section 38:
identifying perfect squares
Ji Yune Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
January 18, 2008
0.8 seconds per correct problem
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Anne Skakel
Lenox, Massachusetts, USA
December 10, 2007
1.2 seconds per correct problem

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Woo Ji Kim
Miss Hall's School
Pittsfield, Massachusetts, USA
December 4, 2007
0.9 seconds per correct problem

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Section 40:
factoring trinomials
Sei Young Shin
Miss Hall's School
Pittsfield, Massachusetts, USA
March 9, 2007
4.4 seconds per correct problem

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Olivia Weinstein
Rockport High School
Rockport, Massachusetts, USA
Age 16
17.9 seconds per correct problem
Hyun Sun Seo
Miss Hall's School
Pittsfield, Massachusetts, USA
April 8, 2008
5.2 seconds per correct problem

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