Simulate the mark, release, and recapture of butterflies during this lab activity. Very easy to follow instructions designed for small groups. This is great for biology, ecology, environmental science, or general science. You can use various objects to use as butterflies. I found butterfly sequins at a local craft store. I have also used bingo magnetic bingo chips. I use small, disposable cake pans with a piece of green paper in the bottom to look like a field. The spoons are the butterfly nets. This is something that the kids enjoy and I use year after year.