4Here's where it all begins to add up! Early math skills are also life skills, and the Big Math 1-2 Workbook is packed with exercises that make learning fun. These proven activities will help your child be successful in school by teaching addition, subtraction, story problems, time, money, fractions, multiplication, and more. Imagination meets real-world problem-solving. We used The Principles and Standards for School Mathematics, published by the National Council of Teachers of Mathematics (NCTM) as a guide in writing this book.