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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 math lesson, learners participate in several activities where they apply measurement skills.

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

In this activity, learners help create and then navigate an outdoor course of the traditional "planets" (including dwarf planet Pluto), which are represented by small common objects.

How do scientists measure how clear or murky water in a lake is? How does water clarity (clearness) affect what lives in the lake?