Gather your supplies. You will need a cookie sheet or some kind of plastic
tray, a white sheet of paper and food coloring (markers may work if you do not have
food coloring)
Place white paper on cookie sheet/tray.
Set cookie sheet/tray and set in rain until paper is wet but not soaking wet.
(Take out
in the rain or lay paper on newspaper and use a spray bottle.)
Allow children to place a few drops of food coloring on the paper and then
watch it spread! You can tilt the tray to watch the colors mix!