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In this activity, learners will predict the size of a giant scale model of a comb or other rectangular object, then make one. If you tripled the size of a dollar bill, could you sit on it?

In this activity, learners shrink the scale of the vast solar system to the size of their neighborhood.

In this activity, learners build a scale model of the solar system using a roll of toilet paper.

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 three/four-day lesson, learners calculate perimeters and areas and draw the castle plan to scale.

This investigation provides learners with a hands-on activity that simulates the changing relationship of surface areas-to-volume for a growing cell.

In this activity, learners create a model using metric measuring tapes and atmosphere composition data.