The Berenstain Bears' big machines: Join the Berenstan Bears as they learn about the different types of machines. These are no ordinary machines--they're BIG machines.
Simple machines: wheels, levers, and pulleys: Two appealing kids and their comical cat introduce levers, wheels, pulleys, inclined planes, and more, and explain how they work.
Keep it simple, Rapunzel: Escaping from a tall tower using one's hair is so fairy-tale old school. This STEM-smart Rapunzel uses the brain beneath her hair to educate her prince (and readers) on the ways the science of simple machines can save the day.
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