They noticed as the warm air melted the ice, the colour was left on the paper. By moving the ice in different ways, the markings on the paper were like those left by a paintbrush or other art making tool.
My children wanted to know why the ice was melting and this lead to a great discussion about the properties of matter and how water can be a solid, liquid, or gas.
I was amazed at just how beautiful this artwork was when the kids were finished. The colours bled into one another and created new colours. Coloured ice cubes are fun to paint with, but also great when incorporated into water table play or used for fun in the bath tub!