Earth Day Challenge - Pledges for habit changes Start this any day during the month of April and run it for 22 days. It's habit forming, fun and can be done school wide! Tips for SuccessInform and Share - Via email, staff meetings, school assemblies, social media, print posters (as needed) #22earthdaychallengeSnap photos of pledges and share (whiteboards work great for pledges and don't waste paper)