What are circuits? Why are they so important? How do they affect our lives every day? Students will find out the answers to these questions and more as they read through the engaging pages of this e-book. Fun facts and high-interest text paired with colorful images and graphics fill the pages of this e-book to keep students interested from cover to cover! A "Think Like a Scientist" activity that supports STEM instruction is included at the end of the e-book for students to use what they've learned in the text and apply that knowledge to the activity. A helpful glossary, table of contents, and index are also included for additional support.