"This innovative text offers a unique approach to making mathematics education research on addition, subtraction, and number concepts readily accessible and und

A simple introduction to the meaning of numbers and sets as a rooster ; on his way to see the world, is joined by fourteen animals along the way.

The fun, engaging program that will help your child master the subtraction facts once and for all—without spending hours and hours drilling flash cards! Subtr

Right-Brained Addition & Subtraction begins with number recognition and counting, and continues through single-digit computation, number patterns, number sense,

Sharpen critical math and thinking skills with the Brainy Book of Addition and Subtraction! With challenging practice pages, entertaining puzzles and games, and