Science Spies 3 (exclusively online mission)

The focus of this investigation is to explore changing states through looking at water expansion. The investigation is designed to introduce the concept of molecules expanding to a Key Stage 1 class. It also provides an accessible means of gaining knowledge during a hands-on science lesson. Resources are minimal and are very simple to prepare. I find this activity works best with the class divided into small groups working on individual work stations. Now the investigation is ready to begin!

You will need per group: one plastic bottle (not a glass bottle); a piece of foil; access to a freezer and a water tap.