Baby Professor 
Simple Machines Make Work Simple | Energy, Force and Motion Grade 3 | Children’s Physics Books 

What are simple machines? Use this book to learn about six types of simple machines such as the screw, inclined plane, wedge, pulley, level, wheel and axle. How do these machines operate and how are they used to make life so much easier? Go ahead and grab a copy today.

เกี่ยวกับผู้แต่ง

Baby Professor showcases a collection of subjects that are educational for kids to help them learn how to do something themselves, exactly how something is done or how it came about. Children love to learn through attractive visuals and Baby Prof. is ideal to get your child the head start he or she needs for the future. Our Motto – ‘Learning is Fun, so let’s Make it Fun to Learn’.