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String and scissors are all you need to find pi all around you.
Make dendritic diversions and bodacious branches.
Test how well your brain can see patterns.
Imperfect alignment can lead to interesting patterns.
Surprisingly, a flat panel rolls smoothly on non-circular rollers.
Use straight lines to learn about circles.
Randomly toss some toothpicks, with pi as your reward.
Substitute coins for radiation.
Create graceful loops and spirals by drawing on a spinning disk.
Square wheels roll smoothly on a round road.
How does this stack up?
Fit nucleic acid and proteins into a small package.
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Attribution: Exploratorium Teacher Institute
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