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In this activity, learners construct drawing machines using a cup, some markers, and a battery pack. The markers act as "legs" for the machine, making a drawing that records as it moves.

In this activity, learners build their own sound machines and explore the interplay of motion and sound.

In this activity learners will build a neighborhood out of blocks and cardboard.

In this activity, learners investigate the basic crystal structures that metal atoms form.

In this activity, learners build a carousel toy that spins when pushed down.

In this design challenge, learners design a storm drain cover that catches litter to protect waterways to learn about how local actions can have system-level effects.

In this activity, learners build a mini dancing robot. This engineering activity introduces learners to electricity, circuits, switches, conductivity, and motors.

In this design challenge activity, learners add headphones to a previously built instrument (see "Build a Band" activity) to make it easier to hear.

Learners create beautiful fluid motion. They explore fluid dynamics, surface tension, solubility, and buoyancy while mixing liquids together.

In this archaeology activity, learners consider ways in which excavating an underwater site is different from excavating a terrestrial site.