A teacher demonstration about density, floating and sinking that uses carbon dixoide gas and air, rather than solids and liquids.

Guidance on the safety measures you'll need and ideas about things to cook.

In this issue we suggest an exciting way to display the fruits of your cultivating efforts on a map of the world, a circuits project using a membrane panel switch. There is also an update on guidance from the HSE regarding asbestos in WW1 artefacts and an exciting new D&T primary course from CLEAPSS.

This practical offers a safe, controlled and clean method for children to enjoy this reaction, whilst clearly being able to observe/identify the reactants and products.