Children's LiteratureMultiplex loves his job towing trucks. Unfortunately, Monster Town Road is so long Multiplex often cannot find the drivers who need help. The Math Monsters, including Addison, Mina and Split, go to work developing number signs to mark out intervals along the road. Now, when drivers call needing help, Multiplex can find them easily by asking them what sign they are close to. Entertaining and amusing, this book is an excellent way to introduce children to number lines, a valuable mathematical tool used in the early grades for counting, adding and subtracting. The book uses photographs from the Math Monsters public television series as well as simple, easy-to-read text. Multiple questions throughout the book actively engage the reader and related activities listed at the book's end give children and adults an opportunity to reinforce the book's concepts by putting them into practice. The Math Monsters public television series was developed in cooperation with the National Council of Teachers of Mathematics (NCTM). The "Math Monsters" series of books is designed to meet and support NCTM Standards for Pre-K-2 mathematics content and process instruction. 2004, Weekly Reader Early Learning Library, Ages 5 up.