In this lesson developed by the Arctic Eider Society, students actively learn about the structural differences between two phases of water: liquid and solid. Students observe how these structural differences relate to the density of water and ice.
1. Water Molecules
First, students learn about water molecules, the change of phases in water and the differences between fresh and salt water ice.
Using simple materials to represent water molecules and salt ions, students can visualize and reflect on the properties of fresh and salt-water ice.