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In this activity, learners explore physics by building a catapult that launches marshmallows with household objects.

This trick from Exploratorium physicist Paul Doherty lets you add together the bounces of two balls and send one ball flying.

This simple and engaging astronomy activity explains nuclear fusion and how radiation is generated by stars, using marshmallows as a model.

This fun astronomy activity allows learners to experience finding stars in the night sky that will eventually go supernova. This activity is perfect for a star party outdoors.

In this indoor or outdoor demonstration, use a large and small ball to illustrate conservation of energy and momentum.