Use tea strainers to make felted balls: Fill strainer with as much wool as possible. Consider mixing different colors. Dip it in warm water and shake vigorously for one minute. Open the ball and drop in a little detergent. Shake again. Reopen strainer and carefully turn the felted ball. Continue to shake the tea strainer in hot water until you get the desired firmness and size. Allow to dry!
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Experiment ~ Can You Undo Water Pollution? In this experiment the kids learned just how hard it is to undo water pollution. We grabbed a bucket of clean water, some household trash, vegetable oil (to stand for toxic oil spills), tongs, and a strainer.