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Big smiles! Ted with the water and fog toy
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T. Brattstrom adjusts the water forming a bell over the fog to 'burp' some fog out...
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Plop! The water covering the fog collapses.
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Meanwhile, at another part of the water and balls play area:
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Meanwhile, at another part of the water and balls play area:
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Here's a red ball on top of a blue ball at the top of the vortex
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Ted pushing down on one red ball, and that pushing down on a second, blue ball....
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Ball-room ball being sucked into a vortex... it will pop out the hole at the bottom!
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Clock, inverters, OR and AND gates, wires to the lamps
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The play room for little kids: "Please Keep Your Feet Below This Line"!
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A bunch of kids hauling the rope to raise the two bowling balls...
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Four kids playing with soap bubbles
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Child-operated strobeoscope and vibrating strings!
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Child operated strobeoscope, reveals vibrating strings!
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P-40 Kittyhawk powered by child turning the crank on the generator
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Child turning the crank, watching the display for power produced (LED) and meter
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Ah, big washers are excellent on these exponential funnels...