Students have a spot to record the do now (which I call a "Biology Box"). I then give students stamps at the end of class for completion of the biology box, homework, and commitments to learning. These points are then used for participation points and homework points. The back side of the sheet provides an area for the exit ticket. Students are able to see their weekly progress as I collect the sheets at the end of the class, stamp them during my prep period, and students grab their sheets at the start of class.