The Way Things Work

The Way Things Work

Inclined Planes

DVD - 2003
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Dropping boulders off a tower makes gravel for the Mammoth Island roads, but lifting the boulders up to the top of the tower is difficult and dangerous. A young Mammoth Islander suggests that rolling boulders up a ramp would be easier than hauling them up a tower
Publisher: Wynnewood, PA : Schlessinger Media, [2003], c2002
ISBN: 9781417100613
1417100613
Branch Call Number: JDVD 603 Way
Characteristics: 1 videodisc (13 min.) : sd., col. ; 4 3/4 in. + 1 teacher's guide
Alternative Title: Inclined planes

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