Give your students engaging practice with the circuit format! This 12-question circuit contains all of the traditional related rates problems -- ladder sliding down a wall, growing conical salt pile, deflating balloon, plus a few extras such as a profit function and Charlie Brown flying a kite. To advance in the circuit, students must hunt for their answer and then that becomes the next problem.
There is no trig on this circuit so it could definitely be used in a college business calculus class. The circuit is, however, calculator active to keep the answers similar enough that the students must really work out the problems.
There is no answer key included with the circuit since the answers are embedded in the circuit. The only prep the teacher needs to do is work the circuit ahead of the students to understand the unfolding of the concept. Could be used for anything from guided notes to homework to test/quiz review.
My colleagues and I thoroughly check the circuits before we use them with our students, but if you ever find a mistake in a circuit, please let me know.