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In this activity, learners make a simple spring-like scale using a rubber band instead of a spring, and calibrate the scale in newtons (N).

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

This Exploratorium activity explores size and scale. Through four levels of screen sizes, learners can sort out objects of different sizes.

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

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

This is an activity in which learners will find that they can detect differences in concentration better with their nose (smelling) than with their eyes (seeing).

Learners explore water adhesion and learn about why water molecules are more strongly attracted to some substances than others.

Working in groups, learners model the continuous destruction and creation of ozone (O3) molecules, which occur in the ozone layer.