Designed to eliminate the misconceptions that come with PEMDAS from the elementary grades. Formed like a "GEM" to remind them that we are now using "GEMDAS," or "Graciously Excuse My Dear Aunt Sally." Shaped with a triangular base to teach the organization of a larger expression shrinking with each completed operation. Mult/Div and Add/Sub switched to move away from having to Mult and Add first because of the acronym, and back to emphasis on left to right. Stressing we work our way from the inside out, top to bottom, left to right!