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In this activity, learners build models of comets, using edible materials, to learn about comets' structure.

In this activity, learners of all ages can enjoy experimenting with ice. Try this experiment at the kitchen table or in the great outdoors to encourage budding scientists to experiment with ice.

Learners smell balloons filled with different scents to guess what's inside. From this, they infer the presence and motion of scented molecules.

In this activity (on page 5 of PDF), learners use dry ice and household materials to make scientifically accurate models of comets.