Hard Math for Elementary School: Answer Key for Workbook

Hard Math for Elementary School: Answer Key for Workbook provides answers to the problems in the similarly titled workbook. The problems in the Hard Math workbook are hard. Some are very hard. This is especially true of “Making Connections” problems, which require that you remember something from an earlier chapter, and “Challenge” problems, which are designed to challenge even the most advanced students (and keep them occupied). For this reason — and simply because it is a big time saver for busy parents and teachers — this answer key is made available at a very low price, and it is strongly recommended that teachers get a copy. The answer key mostly just gives answers, but it does also provide brief explanations for some of the more difficult problems.

Glenn Ellison is the Gregory K. Palm Professor of Economics at MIT. He is also the parent of three daughters and has spent many hours coaching middle school math teams and working with informal groups of younger and older kids in his kitchen classroom.