End-of-Year Classroom Ice Cream STEM Activity

The Science Behind the Magic

This engaging activity captures students’ attention during those final days of school when focus can be challenging. As they create their frozen treats, students are actually witnessing important science concepts in action:

When salt mixes with ice, it disrupts the freezing process by getting between water molecules. This is freezing point depression – the same principle that helps melt icy roads in winter. The salt-ice mixture can reach temperatures well below freezing (as cold as 0°F/-18°C). This super-cold mixture needs energy to melt, so it pulls heat from everything around it – including our coffee creamer. As heat transfers from the creamer to the salty ice, the liquid creamer freezes into a solid state.

Students observe a clear physical change (liquid to solid) and energy transfer in a tangible, memorable way. The activity creates both a scientific learning moment and a sweet celebration, making those last days before summer break both fun and educational.

Perfect for when regular routines are winding down but you still want to keep learning active!