Kristina Holzweiss

Presents advice and step-by-step instructions for crafting moving things out of recycled and easy-to-find materials, including a spinning top, mountain climber, and balloon car. Explores the science behind how these devices work.

"Easy-to-follow instructions help kids discover how to make an electric butterfly, an electric glowbug, and a graphite circuit. Readers will also learn about currents, LED lights, and circuits and meet some electricity pioneers"--Provided by the publisher.

Contains DIY projects involving the science behind movement, energy, and forces.

"Learn how to complete DIY projects dealing with electricity. Along the way, get a look at some of history's most incredible inventions and scientific discoveries."--

"Learn how to complete DIY projects dealing with basic machines and robots. Along the way, get a look at some of history's most incredible inventions and scientific discoveries"--Provided by publisher.