John Paul De Quay

"Make your own miniature medieval battlefield with ordinary items found around your house or school! Step-by-step instructions are used in this book to demonstrate basic engineering and physics skills for kids."--

Explores the atmospheric layers that wrap around Earth, and explains how each layer has a different effect on the way we live on Earth.

"Send paper clips flying with your own miniature launcher! Step-by-step instructions are used in this book to demonstrate basic engineering and physics skills for kids."--

"Whimsical stick figure guides take readers on a tour of various massive machines and how they work in this playful yet extremely informative guide to high-tech machines."--

Join the savvy, accident prone Stickmen on a journey of discovery of how things work. From gigantic machines to submarines and aircraft carriers. How helicopters hover and high-speed trains stay on the line using powerful magnets. View inner and outer workings and discover what makes these amazing machines special. Find out about different machines.

Play while learning concepts of engineering, physics, and motion.