A hands-on approach introduces young scientists to ramps and wedges. Science theory and practical, fun projects teach the physics and the technology behind this

Making Machines with Ramps and Wedges looks at everything from ramps and wedges in history, such as stone axes, to the role of these simple machines in more com

How many simple machines do you use every day? Probably more than you realize! Machines make work easier— helping break things apart, lift heavy objects, and

Have a Yabba-Dabba-Doo day with Fred Flintstone as he explains how a wedge works! Fred shows readers the Flintstone way of using simple machines in everyday sit

Have a Yabba-Dabba-Doo day with Fred Flintstone as he explains how an inclined plane works! Fred shows readers the Flintstone way of using simple machines in ev