More Sideways Arithmetic from Wayside School

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.Sachar, Louis is the author of 'More Sideways Arithmetic from Wayside School' with ISBN 9780590477628 and ISBN 0590477625.