Solids, Liquids & Gases

An excellent resource that encourages learners to identify the differences between solids, liquids and gases. The resource includes teachers notes (if you work outside of the US, you might want to ignore the reference to grade 3 and 4). The resource is well written, includes great pictures and an interactive video on changing states. The resource also encourages learners to develop their own thinking, a great introduction to solids, liquids and gases.

useful IWB presentation with short animation at end where you can change the temperature and see what happens to the water - US version