Snap Circuits Electricity 101 is a tool for opening the exciting world of electronics. Following the Learn by Doing concept, electronics will be easy to understand by building circuits as you learn about them. This book, DEVELOPED BY A TEACHER, emphasizes the practical applications of electronics, without bogging you down in mathematics. This book is as much about science as about electronics. It takes about 3 hours to complete all the projects in the book. Why should you learn about electronics? Electronics plays an ever increasing role in our everyday lives so basic knowledge and understanding of electricity and electronics is good for everyone. This booklet will teach about the process of scientific investigation, and completing the projects and activities support the development skills needed in today's world. Included: 24 Snap Modules, 1 Snap Grid, download Learning Manual from Elenco's website. Ages 8+. Appropriate for Grades 1-6. 2xAA batteries required but not included.