Mathematics education -- Arithmetic, number theory

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Cover -- Title page -- Chapters in the Companion Volume -- Preface -- Suggestions on How to Read This Volume -- Chapter 1. Symbolic Expressions -- 1.1. Basic protocol in the use of symbols -- 1.2. Expressions and identities -- 1.3. Mersenne primes and finite geometric series -- …

This is a systematic exposition of introductory school algebra written specifically for Common Core era teachers. The emphasis of the exposition is to give a mathematically correct treatment of introductory algebra. For example, it explains the proper use of symbols, why ``varia…

"This is a systematic exposition of a major part of the mathematics of grades 5 to 8 (excluding statistics), written specifically for Common Core era teachers. It differs from other books for teachers in that the mathematics is correct, in the sense that all the concepts are cle…