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In this activity, learners explore how spring scales work and how they are used for non-exact weight measurement.

In this activity, learners make or use pre-made clay beams to scale and proportion. Specifically, they discover that when you scale up proportionally (i.e.

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 perform an experiment to find out what determines a flower's color.