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Learners compare the weight of equal volumes of wax, water, and clay. Learners discover that since the wax weighs less than an equal volume of water, it is less dense than water and will float.

In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.

In this investigation, learners explore the force known as buoyancy by placing various objects into water and observing how they behave (for example, which sink more quickly, which float, how much wat

In this design challenge activity, learners build a boat that can hold 25 pennies (or 15 one inch metal washers) for at least ten seconds before sinking.

In this activity, learners take on the role of a carbon atom and record which reservoirs in the carbon cycle they visit.

In this water activity, learners test which objects float and which sink. Learners discover that objects behave differently in water.