Our recent experimentation has been colour mixing.

We have been using various resources to mix the colours and today we used spray bottles with coloured water.

We watched all the colours come together and then mix as they dripped down.

There were lots of discussions on what colours were being made. 

This not only gave us a great experience in colour mixing and an opportunity to get a little messy,  but also strengthened our hand muscles by squeezing the bottle.