One Mathematical Cat, Please! PRECALCULUS
This is a complete, sequenced, free course. It has unlimited, randomly-generated exercises and worksheets in every lesson. It can be used for a year-long high school course or a one-semester college course. Or, just enjoy it yourself, at your own pace!
These books give a print version of the lessons. They're printed in black-and-white, and the print size is small, since each lesson matches the web page exactly, and is then shrunk to fit an 8.5" x 11" page. Check the Amazon preview. Young eyes only!
Beginning March 2023, I'm updating my Precalculus lessons to my new responsive design. The printed books, however, use my original fixed-width pages, so the formatting is slightly different—but the content is identical.