Encompassing science, technology, engineering and mathematics, STEM learning activities foster logic, problem-solving and experimentation. -Includes: 1 Tub Sub
Why do things sink or float Tub Sub knows.As a boat, it floats.As a sub, it sinks.For a floating boat, push the flexible blue part down.For a sinking sub, pull the blue part up and fill the bottom with water.Only the periscope (also a handle) will stay above the water.
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