
Hard Math for Elementary School is new category of math book. The author calls it a math enrichment textbook. The idea is to make it easy for teachers or parents to supplement what kids are getting in school with with complementary lessons that are harder, deeper, and...

Hard Math for Elementary School: Workbook is a workbook to accompany the textbook of the same name. Together the books aim to provide kids who are not challenged by their regular schoolwork with lessons that are harder, deeper, and more fun. The Hard Math...

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...