Crack the Code is one of my favorite cooperative activities. While there are several versions of this activity, I found the one created by Ryan Ellis particularly interesting. I discovered it while listening to his podcast . I then headed to his website to see the activity sheets he created. Inspired by this activity, I created a Google Slides doc to use in class. Click on the pic below to view a copy. Download or make a copy for yourself! The last two slides are the Teacher instructions. Enjoy!
If you have a pdf that you'd like to enlarge, you can do so right from within Adobe Reader. Here's how: Go to "Print", then choose "Poster": Next, set the scale to "200%" for 4 pages (experiment for larger) and I prefer no overlap, so set it to 0: PRINT!!