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“g,” that’s interesting! Investigating gravity.
Use electricity to separate colored dyes.
Boundaries are the gift that keeps on sifting.
Measure the height of an object indirectly using your hand and a ratio.
Find the height of a tree, paper rocket or North Star.
Dividing cells expand exponentially.
Why the world gets dark so fast outside the circle of the campfire.
Test how well your brain can see patterns.
Make a balance that weighs very light things.
Measure the thickness of a sheet of paper.
A carbon dioxide–rich atmosphere changes the water beneath it.
Compare the brightness of two light sources with an oil spot on a white card.
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Attribution: Exploratorium Teacher Institute
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