This is a hangman game. There are 26 problems - one for each letter of the alphabet - and a puzzle page. The students are to pick a letter and work the problem. If the solution is on the puzzle page, they are to fill in the letter of the problem in all spots where the solution is located. If the solution they have found is NOT on the puzzle page, the student must draw a head on the gallows. This process is repeated until the student either completes the puzzle or gets hung.
I used this as a review to a quiz and the students loved it. They worked in groups and discussed the problems as well as the solutions. If the students make a mistake and do not get the correct solution, there is a threat of hanging unnecessarily. Therefore they worked the problems with care, arguing about every little detail. It was fun to hear them argue about math!!!
This goes along with Larson's Calculus book in sections 3-5 to 3-7.