True Books are an indispensable addition to any collection. Each book guides readers through the facts that nurture their need to know.What happens when you slide an object across smooth glass -- or a coarse piece of sandpaper? Learning about science is fun with 10 easy-to-do experiments that explore the force of friction and its effects on motion.
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True Books are an indispensable addition to any collection. Each book guides readers through the facts that nurture their need to know.What happens when you slide an object across smooth glass -- or a coarse piece of sandpaper? Learning about science is fun with 10 easy-to-do experiments that explore the force of friction and its effects on motion.
Read Less
