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In this activity, learners will engineer a roof using simple materials to protect a construction paper person from a rainstorm.

In this activity, learners engineer a paper helicopter that spins to the ground when dropped.

In this activity, learners consider how a simple machine, a lever, turns a small push or pull (a small force) into a larger--or stronger--push or pull (a larger force).

In this activity learners will build roller coasters and test them using small balls or marbles.

Learners act as engineers and design mini submarines that move in the water like real submarines.

In this activity, learners work in teams to build and test paper airplanes. Learners try to fly their airplanes directly on the runway and earn points for accuracy.

Build and test a scale model of a rainforest canopy walkway.

The goal of this activity is to build a miniature bobsled that is either the fastest or the slowest. Learners use recycled materials to design, build, and test their bobsled on a bobsled track.

In this Engineering Design Challenge activity, learners will use balloons to investigate how a multi-stage rocket, like that used in the Interstellar Boundary Explorer (IBEX) mission, can propel a sat