We spent a week with Elmer the Patchwork Elephant. We spent a lot of time on elephants. The different types, their color, habitat, etc. In the book we talked about how most of the elephants were grey except Elmer and one of the children asked "What is grey?" And so we made our own elephants.
Next I talked about our previous color mixing experiences and how we made tints by adding white. I explained that grey is made by mixing black and white. I let them squirt their black and white paint onto a tray and then had them choose one other color to mix in. As they were mixing, one of the children told me "this is a tint of black!". Before painting, we flipped the drawing over so that the children would paint the back of the paper to allow me to cut around their drawings.