Tile it before you multiply
Have students cover a rectangle with square tiles, count them, then multiply the rows by the columns. Same answer! Building it first shows why the formula works, and they never forget it.
Why it works: the U.S. Department of Education's guide for teaching elementary math recommends moving from hands-on objects to drawings to numbers.
Try it withFinding the Area of Shapes Formulas WorksheetWorksheetsOpen it →
















