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Two piece jigsaw, one half yellow, one half blue
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Person using jigsaw saw to cut through wood
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Person using measuring tape to measure boy's arm width
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Planks of wood, hooks, hinge, springs
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Coloured wood hinged at angle attached with springs
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Yellow plank of wood on top of blue wood held together with sp...
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Boy tensing arm muscle as person uses measuring tape to measur...
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Plaster cast of human teeth
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Plaster cast of human teeth from above
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Glass of cola
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Jar, bowl, tubing, measuring jug
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Boy pouring blue liquid from glass jar into large container wi...
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Boy blowing dowm tube into plastic bowl of water with jar of b...
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Plastic bottle cut in half, balloons, scissors, tape, rubber b...
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Profile of man with puffed out cheeks blowing air in straw int...
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Profile of man blowing air into jar of cloudy limewater with s...
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Boy with homemade experimental lung, pulling rubber band taut
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Boy with homemade lung, holding bottom
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Electric bell, wire, nails, plastic circuit
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Boy looking down to thread metal loop over wire attached to el...
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