Some of you may remember that I mentioned something about needing an activity for implicit differentiation when I went for a job interview a few weeks ago. Well, here it is. It really, really, really is meant to for the students to cut the pieces apart and then match them up rather than just draw lines to match on the page. But do what you wish. I have the WORD file if you would like to edit. And please send me feedback if your students are using this! Thanks.