Close It Up

As learners play this challenging strategy game, they build understanding of area and perimeter. On each turn, a player draws a line between two dots next to each other on the grid. When you close a shape, mark it as yours. You can make any shapes, as long as they’re closed. Keep taking turns until there is no more room. The player with the most area wins. Includes easier and harder variations. Available as a downloadable pdf and in Spanish. [Activity is publicly available through a web crawler capture on Archive.org.]