Project to get kids invested... designing cell phone cases! Then they try to sell them, and determine if they make profits. Students design their own case, and then are randomly given sets of cards that tell them cost, how many they've sold, etc. (cards included), they write and graph a linear equation about their business, and then determine if they have made enough money to pay their start up loan back. Check out the preview. Word doc for your own edits... enjoy! (no key included, since answers will vary).