The Kingsford Middle School eighth-grade students in Scott Kleiman’s classroom modeled a bungee jump using a Barbie doll and rubber bands. The consideration of cord length is very important in a bungee jump — too short and the jumper doesn’t get much of a thrill, too long and ouch. The activity had the students collecting data on smaller jumps within the classroom. The data was then put into a scatter plot. A best-fitting line was drawn through the scatter plot. Using their line, students calculated a function that related the number of rubber bands to the distance that Barbie fell. Using this function, the students had to extrapolate — do the math — to find how many rubber bands were needed to give Barbie the most thrilling bungee jump from the top rail of the stairwell at KMS, which is 204 inches high.