He decided to compare filter materials in the solar wax melter. I have three styrofoam box solar wax melters so he compared three filter materials - coffee filter, paper towel, and silk.
Then on a hot but somewhat cloudy day in August, we put all three solar wax melters out on the sidewalk - one with coffee filters, one with paper towels and one with silk. Dylan said in his report that "we left them out for three days, including nights."
At the end of the experiment, he discovered that his hypothesis (that paper towels would be the best because that is what his grandma used), was wrong. The coffee filter resulted in the cleanest wax by subjective observation. The silk, which took three full days to filter through completely, absorbed the least amount of wax, thus resulting in the most volume of wax filtered through.
He and I printed out and put captions on photo of everything he did. Here he is in front of his board.
I was so proud of him and excited that he wanted me to do this with him. I hope he'll choose a bee project next year also.