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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 will build a neighborhood out of blocks and cardboard.

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.

This outdoor activity/field trip requires a place where minnows swim, such as a local pond or brook.

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

In this activity, learners make critters out of recyclables and apply the rules of mathematics to solve genetics problems.

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

In this math lesson, learners participate in several activities where they apply measurement skills.