Collaboration Activity (good for mentor time) from: In the middle: Life as a seventh grade language arts teacher. The Cup Challenge - teach students how to work in cooperative groups with this simple and fun challenge.
Third Grade first day of school -(or use as a good icebreaker for adults!) I usually do something similar, but I think I'll do it as a BiNGO board this year. Me: I use something similar with my graders as a BINGO board.
Magnetic Puzzles - stick a little magnet onto the back of each puzzle piece, then put together the puzzle on a cookie sheet! Great way to keep from losing puzzle pieces, easy clean-up, and great for car trips!