There are two lab activities included. In the first, students work in groups of 3, with two students working and one recording data. One student tapes down their thumbs, the second doesn't, and they attempt to complete tasks described in the lab, recording time, who finished first, and how easy it was. They then answer questions about their data. This lab establishes what an adaptation is, and how adaptations aren't adaptations everywhere.
In the second lab, the class is split in half, with half of the taping down their thumbs, and the other half not. Students compete two at a time, one from each side, with each competition representing a generation. After each generation, the loser becomes the variation of the winner. This lab demonstrates natural selection and re-establishes the nature of adaptation.