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In this activity, learners construct their own small catapults using simple materials. Learners follow visual instructions to build their launching device.

In this activity, learners make a scale model of the Solar System and learn the real definition of "space." Learners use the online calculator to create an appropriate scale to use as a basis for thei

In this activity, learners eat a snack and make a model of the plumbing system of a volcano.

With two stacks of books and a few rolls of pennies, build two kinds of bridges--a beam span and an arch span--and see how much weight each of them can hold.

In this activity, learners model hot spot island formation, orientation and progression with condiments.

In this activity, two groups of learners create two separate landform models out of clay (mountains and valleys).

In this activity, learners investigate the relative growth of lengths, areas, and volumes as cylinders are scaled up.

In this activity, learners make a 3-D model of magnetic fields by inserting a small, strong magnet into a sphere.

In this activity, learners use crayons to draw conclusions about rocks and the rock cycle.

In this activity, learners build bridges out of newspaper and tape to explore how structures are designed to bear loads.