This activity is simple and fun. It may be a bit messy too! Your students will first be put into groups and then be given the listed materials. Be sure to have something to contain the toothpaste mess. Your students will be asked to squeeze as much toothpaste as possible into the tray. Then the second challenge is getting the toothpaste back in. Discuss and pass out this half-sheet print out to discuss that words matter and what we say can't be taken back.