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Use agar cubes to investigate how size impacts diffusion.
Discover the meaning of evolutionary fitness in this predator/prey simulation.
Model the carbon cycle and its principal reservoirs and flow rates using rice.
Substitute coins for radiation.
Discover some big surprises in the microscopic world.
Model the behavior of light reflecting off soap film surfaces.
Use index cards to show how light plus light equals dark.
Visualize air pressure with the help of a self-rolling pet toy.
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Attribution: Exploratorium Teacher Institute
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