Fact Family Memory Card Game

This version of the game, Concentration, focuses on math facts for a specific number.  It can be played alone or with a group.

Supplies:
*One deck of playing cards

1.  Sort through the deck and remove all the cards higher than the featured number for the math game.  If the goal is to learn the facts to make 10, remove all the cards higher than 10.
2.  Shuffle all the cards and place them face down in a grid pattern.
3.  Taking turns, each player flips two cards looking for a matching fact family pair.  The number 10 card should be laid aside as a correct solution that doesn't require a pair.
4.  Continue playing until all the cards have been matched into pairs.  The player with the highest number of pairs at the end of the game is the winner.