"A foundational look at levers, explaining how these simple machines work and describing some common examples, such as crowbars, that have been used throughout history"--Provided by publisher.
"A foundational look at screws, explaining how these simple machines work and describing some common examples, such as jar lids, that have been used throughout history"--Provided by publisher.
"A foundational look at wheels and axles, explaining how these simple machines work and describing some common examples, such as doorknobs, that have been used throughout history"--Provided by publish
"A foundational look at inclined planes, explaining how these simple machines work and describing some common examples, such as ramps, that have been used throughout history"--Provided by publisher.
In Simple Machines: Lever, young learners in grades 1–3 will explore how levers give us the lift we need. From scissors to wheelbarrows, this 24-page title uses real-world examples of simple machine m
