Our classroom was full of flies last week. (Fortunately none of them were real; licensing is due any day now.) The kids, when they arrived last Monday morning, found a hula hoop, full of tape, hanging from the ceiling in a corner of our pretend center.
How to Make Watercolors Bring 2 cups of water to a boil. Add 2 tablespoons of vinegar and stir. Pour into storage container (like a baby food jar). Add food coloring. I added about 20 drops to each jar. Stir. Let the watercolors set until room temperature.