I gave my students the Kokopelli design to do. They needed a break from what we had been working on for last 2-3 weeks. They LOVED it! I used your highlighting suggestion and that (I assume) really gave them the additional clues/reminders as they worked. It was amazing how on task even the usually off task students were. Thank you for such an engaging, fun activity that was good mathematical practice as well! I look forward to trying more designs!