Another lesson (see link below), this one resembling a game of charades, and requiring numerous whiteboards for the students. If the materials are available, this is a great second-day lesson to piggy back off the lesson linked in the main topic.
Lesson Guideline: http://auhsdmath.pbworks.com/w/file/fetch/60111510/3_0%20Add%20integers-charades%5Bk%5D%283%29.pdf
Handout: http://auhsdmath.pbworks.com/w/file/fetch/60111512/3_1%20Adding%20integers%20with%20tiles%283%29.pdf