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Make a tin can telephone
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in: Lesson C-2. Sound, Vibrations, and Energy
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- 7 years, 5 months ago
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Demonstration of vibrations using tuning forks
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- 7 years, 5 months ago
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How we make vocal sounds
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- 7 years, 5 months ago
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Starting point–Stimulating Interest
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in: Lesson B-10. Plant Science I: Basic Plant Structure and Reproduction
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- 7 years, 6 months ago
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Milk jug tub?
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in: Lesson A-16. How Metal Ships Float and Making a Hydrometer
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- 7 years, 6 months ago
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Muscles of the human body
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- 7 years, 6 months ago
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Movement of the vertebrate skeleton
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- 7 years, 6 months ago
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The human skeleton and skeletons of other vertebrates
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- 7 years, 6 months ago
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Theme of Lesson–Survival Depends on Adaptation
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- 7 years, 7 months ago
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Invasive species, endangered species
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- 7 years, 7 months ago
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What is a species?
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- 7 years, 7 months ago
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Aids for Identification
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- 7 years, 7 months ago
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Variation among litter mates
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- 7 years, 7 months ago
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Plant Life Cycle
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- 7 years, 7 months ago
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Observing Life Cycles
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- 7 years, 7 months ago
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Make a tin can telephone