What do jar tops and water-bottle lids have in common? Both of them are screws! Screws are simple machines. They help us to do jobs more easily. But don't take our word for it. Put screws to the test with the fun experiments you'll find in this book.
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What do jar tops and water-bottle lids have in common? Both of them are screws! Screws are simple machines. They help us to do jobs more easily. But don't take our word for it. Put screws to the test with the fun experiments you'll find in this book.
Read Less
Add this copy of Put Screws (Searchlight Machines: to the Test) to cart. $16.53, new condition, Sold by Pearlydewdrops rated 4.0 out of 5 stars, ships from Haywards Heath, WEST SUSSEX, UNITED KINGDOM, published 2011 by Lerner Publishing Group.
