This fun math game will help students practice their doubles facts to 20. Each player takes a turn rolling the die. The player doubles the number on the die and then places a disk on that number on the gameboard. If another player has a disk on the board that player can BUMP their opponent off. But if a player has two tokens on a number, then he/she has won that number. The game ends when the entire board is full. The winner is the player that has won the most numbers.