This Earth Day math subtraction in 20 logic puzzle activity is perfect for math enrichment. The subtraction within 20 task cards and worksheet will challenge students to think critically. With Earth Day images, this would make a great Earth Day math activity. It can be used as a math center, a whole class activity, or for fast finishers. This is a great printable, no-prep enrichment worksheet activity. It is an engaging option for gifted and talented students, as well as everyone else! Great fo