This book evolved from notes for a series of 12 seminars on arithmetic taught in the early grades for teachers and future teachers, each chapter corresponding to a seminar. The topics include divisibility and order in the integers, prime numbers and the factorization into primes, modular arithmetic and divisibility tests, the arithmetic of fractions, properties of the multiplication of fractions, and the decimal expansion of a fraction. Annotation ©2013 Book News, Inc., Portland, OR (booknews.com)