ŘADA: 1
OBSAH
Build a leaning tower of pasta; a straw that doesn't work; discover the power of bicycle gears; what happens when a whale spouts like a geyser; discover what to do if you're in a thunderstorm, and work out the age of a tree!
ŘADA: 1
Build a leaning tower of pasta; a straw that doesn't work; discover the power of bicycle gears; what happens when a whale spouts like a geyser; discover what to do if you're in a thunderstorm, and work out the age of a tree!
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