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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 activity, learners explore how boats are engineered to achieve speed.

Learners design, build, and test models of "dragon boats" made from up to three milk cartons.

Build your own Mini Mini Golf Course and learn about hands-on building and design, basic circuitry, motion modules and more!

This activity (on page 2 of the PDF under SciGirls Activity: Luge) is a full inquiry-based challenge related to motion and design optimization.