For Grade 2 students learning about the simple changes of matter, for example from ice to liquid water.
From the Curriculum:
They become aware of a wide variety of similarities and differences in the properties of those materials, including how they look, feel, and change. Students will develop their understanding of the properties of materials through investigating familiar liquid and solid materials, including the different ways in which liquids and solids interact and the various uses of liquid and solid materials.
Materials that exist as liquids and solids have specific properties;
Liquids and solids interact in different ways;
Some liquids and solids can be harmful to us and the environment.