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In this activity/demo, learners discover how liquid nitrogen cools a creamy mixture at such a rapid rate that it precipitates super fine grained (nano) ice cream.

This is a classic exercise for visualizing the scale of the Solar System.

In this activity, learners discover the principles of edible glass by making a supersaturated sugar solution.

In this activity (on page 14 of PDF), learners use a pan full of flour and some rocks to create a moonscape.