Science Gal: Setting Expectations for Group Work - Tie 4 strings around an elastic and the kids have to stretch the elastic as a team to pick up red solo cups and place them in a configuration. Also has ideas for individual roles that can be rotated.
Puzzle Piece Table Seats - a fun way to add a team building activity to new table seats in the classroom! Possible first day activity for finding your group partners. Or make it a group activity using a large poster.