When learning addition and substraction the children can learn it on the snakes and ladder game or any other game board like sorry. Ask the child to simply add two cards or three cards to teach him addition.They can similary do it with a dice in the case of snakes and ladder. To teach substraction ask him to substract from the two given cards. If playing snakes and ladder when he reaches the snake ask him to substract otherwise keep on adding. The child will learn addition and substraction on the board in this fun and simple manner.