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In this activity, learners simulate the separation techniques that materials recovery facilities (MRFs) use and then design their own series of recycling techniques.

What does it mean to be alive? Is a cactus alive? Is a seed alive? Is the air we breathe alive? What are the necessary characteristics?

In this activity, learners explore a bucket of sand and beach objects.

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