Teachers, save “Christmas Nim” to assign it to your class.

This is a two-player game. Each player takes turns removing either one, two, or three pieces (ornaments) from the board as long as the pieces are from the same horizontal row. The player may choose the number of pieces they would like to remove each turn. Continue taking turns until all pieces have been removed. The last player to move a piece loses the game. Can you stick your opponent with the last piece? Keep playing and try to develop a strategy that leaves your opponent with the final move. Use the tool to choose the pieces you want to move. Use the tool over and over again to reset the game.