Porn star appears on cover of Thai math textbook MuangThai Book recalled "Basic Mathematics" textbooks after a picture of a "teacher" on the cover was found to be a promotional still from a porn film.

The book was originally a paper book from 2011 with a 2002 first edition but those are out of print now. However, math is math, so regardless of the age of the book, it is worth a look.

Cover to cover, Hart’s love of math fizzes off the page, such as when she implores readers to put down the book and twist a line of paper into a Möbius strip.

Viral Math Textbook Cover. Search. Join Club Cosmo; ... This College Prep Algebra textbook is freaking out the entire internet because the people on the cover of the book are posing for the cover ...