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In this activity, learners dissect a piece of pizza to learn about nutrients important for health.

In this activity, learners use two different techniques to estimate how many little things fit into one bigger thing.

In this artistic activity, learners blow up a smaller picture into a larger one, by using a grid.

In this activity, learners investigate parallax, a method used to measure distances to stars and planets in the solar system.

In this activity (12th activity on the page), learners conduct an experiment to demonstrate how muscles are constantly feeding information to the brain about what they are doing.

In this activity, learners will explore how the human brain interprets environmental stimuli.