Concentration, also known as Memory, Matching or simply Pairs, is a card game in which all of the (20)cards are laid face down on a surface and two cards are flipped face up on each turn. The object of the game is to turn over pairs of matching cards. This can be played with any number of players or as solitaire. This is an especially good game for young children. There are 3 sets of cards, one set in English, one in Spanish, and one with both English/Spanish.
Concentration 'number to set' in English and Spanish is licensed under a Creative Commons Attribution-NonCommercial-NoDerivs 3.0 Unported License.