The economy is a social science that studies the production, the distribution and the consumption of goods and services. It analyses how the individuals take decisions, interactions and how influence in his behaviour the institutions and the incentives. The aim of this matter is to seat the bases of a rigorous language and transmit the basic economic knowledges so that the student learn to think like an economist. The program of the matter offers a panoramic vision of the big ideas that repeat in Economy like the cost of opportunity, the taking of decisions in marginal terms, the paper of the incentives, the efficiency of the allocations of the market, and like this until ten basic principles that constitute the foundation of the greater part of the economic analysis.