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peterhoh: Climbing the ramp
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peterhoh: Jack's fast car close up of pulleys
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peterhoh: Mitchell & Sam's racing car
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peterhoh: clock 3
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peterhoh: clock mechanism 2
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peterhoh: Mechanical hammer
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peterhoh: Mechanical hammer in motion
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peterhoh: windmill car
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peterhoh: windmill car
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peterhoh: Windmill Car video
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peterhoh: generator
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peterhoh: Generator
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peterhoh: generator and capacitor
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peterhoh: Amusement Park ride
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peterhoh: water turbine by Christy and Jayda
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peterhoh: solar car
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peterhoh: Solar car
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peterhoh: solar rover
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peterhoh: solar rover
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peterhoh: Solar car
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peterhoh: solar car by Alex
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peterhoh: solar car by Alex
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peterhoh: Samantha's solar car
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peterhoh: Johnny's solar car
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peterhoh: Robot with swinging arms
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peterhoh: grabber
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peterhoh: grabber
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peterhoh: another grabber
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peterhoh: Grabber by Teja
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peterhoh: Grabber by Sebastian