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In this activity, learners touch supercooled water drops with an ice crystal and trigger the water drops to freeze instantly.

In this "Sid the Science Kid" activity from Episode 108: My Ice Pops, learners observe reversible change while thinking about ways to make ice melt.

In this activity, challenge learners to keep an ice cube from completely melting in 30 minutes. Learners engineer a box or wrap to prevent an ice cube from melting.

In this chemistry activity (page 1 of the PDF), learners will observe a physical change.

Learners explore the variables that affect the properties of ice and the places where different types of ice are found.

In this activity, learners thread colored beads onto string. Each beach represent a process of the water cycle.