Books
2 results found| Title | Authors | Description | OpenBook ID | |
|---|---|---|---|---|
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Wind-ups | Chris Ollerenshaw,Pat Triggs | Illustrations and activities demonstrate springs and wind-up toys as sources of energy. Includes a plan for building a model with a wind-up mechanism, and notes for teachers and parents. Suggested le… | OL21674478W |
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Levers | Chris Ollerenshaw,Pat Triggs | Introduces the principles of levers as simple machines, using examples from everyday life and demonstrates how levers work with simple activities and experiments. Includes notes for teachers and pare… | OL22073100W |