The definition of supply and market equilibrium in textbooks for secondary education

In the system of economic knowledge, the theory of market equilibrium takes an important place. The article presents the results of content-analysis of definition of terms "supply" and "market equilibrium" from all textbooks for secondary education, recommended by the Ministry of education and science of Russia. The absence of a unified conceptual framework in the market theory is shown. In textbooks is unreasonable tabular material and graphics of market supply. these textbooks do not use well-known formulas that describe supply and demand, and allow for the calculation of market equilibrium parameters.