My son's science fair project was to measure how much water got used by taking showers vs baths, low-flow vs regular toilets, hand-washing vs dishwashers, etc. We had a pretty nasty drought in our state that year. He had plotted charts, calculated cost savings, learned how to use graphic software and printed color banners. Did it all himself.

The next aisle over, a couple of kids had counted the number of colors in a bag of jellybeans. They had hand-drawn a bar chart on a board with a sharpie. However, they also had a bowl full of jellybeans and you could take a handful if you stopped by. They made sure the bowl was kept full. There was a line out the door.

An important science lesson was learned that year.