You'll need a plate, some milk, food coloring, a tooth pick and a little dish soap.
Pour a very small amount of milk onto the plate, just enough to cover the bottom. Add drops of food coloring around the dish (I found that just one or two small drops worked better than four or five)
|I messed with the yellow to see if it worked... oops|
Little ones can learn about color mixing and bigger little ones can start to look into the reasons WHY this experiment works. I probably should too...
And as an aside; if your kiddo loves this activity as much as I do I would recommend buying some cheapo milk because it is not very cost effective to be using the family's organic milk! lol