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In this activity, learners will explore how a hydrometer works by building a working model and conducting experiments.

The "Exploring the Solar System: Magnetic Fields" activity shows participants how scientists can use tools to study the invisible magnetic fields of Earth, the Sun, and other objects in the universe.

Using simple materials, learners will construct the end effector (grasping device) of a robotic arm and use the device to capture and pick up an object.

In this activity about camouflage, learners create a model that shows how a flounder is able to blend into a variety of environments.