This sheet, available from www.mathsphere.co.uk, is good for playing tic-tac-toe games, designing Sudoku-style logic problems, and teaching children to line up their digits in vertical math problems:
This sheet, available from www.mathsphere.co.uk, is good for playing tic-tac-toe games, designing Sudoku-style logic problems, and teaching children to line up their digits in vertical math problems: