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  •  Gail Saunders-Smith
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Zigzag Movement
 
Zigzag Movement
by Gail Saunders-Smith
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What Are Levers?
 
What Are Levers?
by Helen Frost
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What Are Wedges?
 
What Are Wedges?
by Helen Frost
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What Are Pulleys?
 
What Are Pulleys?
by Helen Frost
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What Are Screws?
 
What Are Screws?
by Helen Frost
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Vibrations
 
Vibrations
by Lola M. Schaefer, Gail Saunders-Smith
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at 2 Sellers
How Things Move
 
How Things Move
by Gail Saunders-Smith, Don L. Curry
No user ratings
What Are Wheels and Axles?
 
What Are Wheels and Axles?
by Helen Frost, Gail Saunders-Smith
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Back and Forth
 
Back and Forth
by Gail Saunders-Smith
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