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First Science Experiments

Mighty Machines

By Levine, Shar & Johnstone, Leslie

Publishers Summary:
How do machines work? Kids will have a blast constructing a mini-seesaw to illustrate the way a lever operates or creating their very own pulley from an empty spool, string, ribbon, pails, pennies, a broom, and two chairs. They’ll find out why they can’t put in a screw using only their fingers and examine the different parts of compound machines. In another experiment, a child’s bicycle becomes a laboratory for understanding whether wheels have to be smooth to run. A good time will be had by all.

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ISBN
978-1-40270-900-5
Publisher
Sterling


REVIEWS

School Library Journal

Reviewed on September 1, 2004

Gr 3-5 After a note to adults that includes safety precautions, this book states the basic principles of physics that explain why simple machines work. Readers are then directed to create a scale, similar to a fishing scale, from a wooden ruler, rubber band, paper clip, and small bag of rice. This device is used to measure effort in many of the following demonstrations of the work done by simp...Log In or Sign Up to Read More

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