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How do you measure a bubble when it's floating? You can't really, but in this activity, learners can measure the diameter of the ring of suds a bubble leaves on a flat surface.

In this activity, learners make a model of a one-way heart valve to investigate how a heart controls the direction of blood flow.

In this activity, learners explore how eating unhealthy food can damage a heart and arteries.

This game teaches ratio and proportion by having learners make "salads" that combine three types of beans in different combinations.

Learners will explore the concept of angular distance, and investigate why the moon appears to be the same size as the sun during a solar eclipse, despite the sun being much larger.

In this fun sticker activity, learners will create a size wheel with images of objects of different size, from macroscopic scale (like an ant) to nanoscale (like DNA).

In this outdoor fall activity, learners find out what living in or under a layer of leaves is like.

En esta actividad los aprendices aprenderán un truco de magia donde la magia es la presión del aire.