For our first experiment with coffee filters we used liquid water colors to see what would happen if we dropped yellow and red pain onto the surface. Not only were we excited to see how the paper absorbed the paint, but we also enjoyed watching the two primary colors mix to make orange. Using eye droppers also helped us to strengthen our hand muscles for learning to write.
The older students were curious to see what happened when they first decorated their coffee filters with washable markers. After they added lots of designs and colors, clear water was dropped on to the filters. It was amazing to see the colors blend and spread. For both experiments we used about 5-6 coffee filters on top on each other to help absorb the liquid. Some of our coffee filters went home and others we are keeping to use for fall leaves!
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