Thomas Canavan 
Symbols and Algebra [PDF ebook] 

This book will help students to hone their algebra problem solving abilities with 50 fun and engaging puzzles. All of the puzzles are carefully designed to help young readers increase their speed, confidence, accuracy, and ability in solving math problems that involve algebra and other symbol systems-both in the classroom and in the real world. Each page of the book features a different puzzle intended to enhance the development of necessary algebraic skills. The book’s content and methods correlate closely with National Council of Teachers of Mathematics (NCTM) standards.