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Roseann Feldmann & Sally M. Walker 
Put Screws to the Test [PDF ebook] 

الدعم

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. As part of the Searchlight Books(TM) collection, this series sheds light on a key science question-How Do Simple Machines Work? Hands-on experiments, interesting photos, and useful diagrams will help you find the answer!

€60.07
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لغة الإنجليزية ● شكل PDF ● ISBN 9780761380092 ● الناشر Lerner Publishing Group ● نشرت 2011 ● للتحميل 3 مرات ● دقة EUR ● هوية شخصية 4762014 ● حماية النسخ Adobe DRM
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المزيد من الكتب الإلكترونية من نفس المؤلف (المؤلفين) / محرر

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