A card game, "Mercado," or Market Rummy, designed to teach basic market skills to rural Ecuadorians is described. Two to five people can play the game, which is presently used in night community meetings and in the educational program in coastal cooperatives. The game consists of two decks of cards: one represents money, the other represents typical market commodities with the unit price included. Through drawing and discarding, players match money and commodity cards. For example, two cords of wood at five "sucres" a cord equals a ten "Sucre" note. Play continues until one player has matched all the cards in his hand. Players gain skills as they add costs of products and match them against money cards. For the purposes of rural education in Ecuador, the author encourages using the cards as raw materials and allowing group leaders to create a process and devise a set of rules to meet specific needs. The game may take several variations by considering the effects of bartering, supply and demand, quality of food, and basic nutritional needs. A complete description of the components of Market Rummy and four simple and five complex versions of the game are included. (KC)