Extra Materials Required : whatever you like!These Math Mazes are good for puzzle-loving kids as they learn their 7 and 8 times tables. Then, the trick is simple — a card is selected, the number on the card is spelled out and the cards are sorted into their two different colors. Add the following lines in viewDidLoad(), just before the code that presents the scene: level = Level() scene.level = level After creating the new Level instance, you set the level property on the scene to tie together the model and the view. The player with the most squares at the end is the winner! My Dots and Boxes page has some game sheets to download and print, some strategy tips, and some suggested variations on the traditional version.