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Learners see that a carrot slice sinks in fresh water and floats in saltwater.

In this activity, learners build a paper stellated rhombic dodecahedron, a three-dimensional 12-pointed star.

Learners see convection currents in action in this highly visual demonstration. Sealed bags of colored hot or cold water are immersed in tanks of water.

In this activity, learners examine the culture and history of the tomb site.

In this activity, learners create a kind of balance device using a wire coat hanger, some string, and paper cups.