CC3 1.1.2: 1-9 Answer eTool (CPM)
Click on the link below to access eTool.
This answer eTool is only one way students may attack the problem. Some students may do color patterns similar to what you see in this eTool. Other students verbally describe how they build the next figure. It is not expected that students give a formula. And there are other great patterns students may find.