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This is an activity that models the operation of a seismograph, a tool used to measure the size of earthquakes.

Straws and pipe cleaners are terrific materials for building models of pyramids and cubes.

In this activity, learners investigate the concepts of relative size and distance by creating a basic model of the solar system.

In this design challenge activity, learners build a machine out of cardboard that runs smoothly and dependably. Learners must be precise to make sure their component works properly.

In this activity, learners make a scale model of an atom to see how big or how small an atom is compared to its nucleus. Learners will realize that most of matter is just empty space!

In this activity, learners build edible models of Jupiter and Earth to compare their sizes and illustrate the planets' internal layers.

In this activity, learners model the gravitational fields of planets on a flexible surface.

In this experiment, learners design and build a model room in a shoebox and furnish it with tiny furniture.

In this demonstration, learners compare the relative sizes and masses of scale models of the planets as represented by fruits and other foods.