In this individual / pairs activity, students apply what they know about tangent lines and derivatives. Thirteen multiple-choice questions are posted throughout the room. Students start at any question, and the answer to the question tells them which one to go to next. When finished, the students will have looped back to the question where they started.
An answer key is included. Checking answers is easy because each question has a letter, and following the path in the correct order will spell a phrase that teachers can easily remember (but students probably won't guess!)