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In this design challenge, learners use their creativity and imagination to design and test a wildlife crossing for their favorite animal.

In this ocean engineering activity, learners explore buoyancy and water displacement. Then, learners design models of deep sea divers that are neutrally buoyant.

In this hands-on activity, learners use the steps of the design process to create a hook to rescue a "space capsule" from the water.

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 physical sciences activity, learners explore how passive solar design increases energy efficiency.

In this design challenge activity, learners make a balloon hover at eye level for five seconds, and then make it move by creating air currents.