Brain Stretching Math Riddles This book is the second in a series of riddles books. It is a collection of 150 brain teasing math riddles and puzzles. Their purp

This is a combo volume that incorporates all four volumes for level 1. The interior of the 4 in 1 volume is always updated to contain the latest edition of the

If you've got a knack for math, these puzzles will add up to a whole lot of fun. The five challenging tests each contain the same types of grids and shapes, so

Brain Teasers for Kids - Riddles for the Whole Family "The mind once stretched by a new idea, never returns to its original dimensions." Ralph Waldo Emerson Thi

For Ages 1 to 5 years old. Grades: preschool to grade 1.If you want a head-start for your child, this book is ideal for teaching basic addition. It explains how