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In this online interactive simulation, learners will add different salts to water and then watch the salts dissolve and achieve a dynamic equilibrium with solid precipitate.

This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

Students design and build their own parachutes in this hands-on engineering project.

In this design challenge activity, learners build a tower that can support a tennis ball at least 18 inches off the ground while withstanding the wind from a fan.

In this online interactive simulation, learners will test the pH of liquids like coffee, spit, and soap to determine whether each is acidic, basic, or neutral.

This is a virtual representation of a sound mixer containing pre-looped sounds of animal, insect, and environmental noises.

In this design challenge activity, learners invent an emergency shelter that can fit a person and is sturdy and quick to build.

In this activity, learners use sieves with different-sized holes to sort balls by size.