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"...learn how wheels work along with axles and how they use mechanical advantage to make it easier to move heavy objects from one place to another."--Provided by publisher.

Produktbeschreibung
"...learn how wheels work along with axles and how they use mechanical advantage to make it easier to move heavy objects from one place to another."--Provided by publisher.
Autorenporträt
Andi Diehn has written many books for children, and a few for adults as well. She works as an editor and marketer for Nomad Press and lives with her family in rural New Hampshire.