This activity can be used with any Biology textbook or class. It is generic. On the first day, after I introduce myself, take roll and get them to take a seat, I give them this activity while I do paperwork. I like to see how they write, draw and follow directions. The measuring piece is super easy. It can be sent home for homework if they don't finish. I like to set the mood right away that this will be a serious but interesting class. Since drawing helps in the understanding of biological concepts, I have them draw a few things too.