Should chewing gum be allowed in school? Allow kids to debate this AFTER they learn the facts about gum in schools from the good and the bad! This is a PBL activity that incorporates critical thinking with the highest level of blooms. Students work both independently and collaboratively on these activities. This is a PowerPoint that includes, videos, jigsaw activities, info-graphics, and more! My classes have really enjoyed this thought provoking real world scenario, especially when I give them a piece of gum to chew on.