Louis Sachar and his wild Wayside School are at it again, with even more brain twisters. This sequel to the popular Sideways Arithmetic From Wayside School contains an all-new line-up of more than 50 math puzzles requiring only basic math skills to solve. Full of clues and hints, the book provides all the answers in the back.
From the Newbery award-winning author of Holes

Everything in Mrs. Jewls's class has gone topsy-turvy...again. The report cards are scrambled, the pop quiz won't pop, and watermelons are falling out the windows. On top of all that, the boys are upset because Allison has announced that only two of them will be invited to her birthday party, since if more than two boys come, they'll all start acting silly. You never know how things will add up at Wayside School.