Students will work cooperatively in groups to test how many rubber bands they can string together so that their assigned toy successfully bungee jumps as close to the ground as possible without touching. Students share their data with the whole class and generate a graph of all the toys for each group (I use 6 groups but you can customize it for your class). Afterward, students analyze the graph and look for a trend showing a relationship between the mass of the toy and the number of rubber bands required. I use my Promethean board for students to show their data and to graph their toy. I have pictures of the toys that the students can move onto the graph in the appropriate place, and this helps them to make trending connections better. If you have a Promethean board just send me a message after you buy this lab, and I will email you the Promethean file for free.