STEM - Students partner up and have to build the longest chain they can with only one piece of construction paper. This would be great for a measurement activity or a cooperative learning/team building activity.
CHEEZ-IT Area & Perimeter: "What a great way to introduce the concept of area and perimeter to kids! Start out creating squares and rectangles and find the area, perimeter. Then, have kids construct irregular polygons.
Math: Area math game: Roll the dice and draw the area array on your own grid - first to fill it wins. Or 2 players choose a different coloured pen each, use one grid and the player who cannot complete the last array is the loser.