Our fabulous local library has been hosting Mad Science Mondays this spring, with professors and students from the college giving hands-on science lessons. Today's topic was slime. Specifically slime on rocks - algae.
One of the science professors led a short discussion of food chains. He prompted the kids to work their way down the food chain from big predator to plants - lion, zebra, grass. Then he told the kids that algae is the "grass" of rivers. Then the kids got a chance to look at and touch algae. Slime.
I think it's time to find a creek to explore for my science girl and her reluctant sister!