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Found 1 from your keywords: author=Holt, Hellen Devitt
cover
Discovery Channel School: Inventors and Inventions - Elementary
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Holt, Hellen Devitt

Part 1:rnNecessity is the mother of invention, they say, and she has created some fairly unusual children. Animal Tracking - Satellites let scientists follow elephants, whales, and manatees. Baby Stretcher - When an infant is injured, this child-size stretcher provides more protection. Biodegradable Gold Tee - From aboriginal weapon to childs toy, learn about the forces that bring boomerangs ba…

Edition
-
ISBN/ISSN
8994181067186
Collation
1 Disc
Series Title
Discovery Channel School
Call Number
DISC 608 Hol