The purpose of this study is to investigate the level of attention to the environmental crisis issue in elementary school textbooks. The method is Shannon entropy. The unit of analysis contains texts, activities, and images that 3961 pages were totally reviewed. The statistical population consisted of elementary school books and all of them were selected as samples. The components and indicators of the environmental crisis were extracted from documents and earlier sources and checked out in the books. The research content validity was obtained using CVR which was 0.90 and confirmed, and the reliability was 0.98 based on the agreement coefficient. Findings have shown that in elementary books, a total of 68 cases were referred to the environmental crisis; 19 cases were related to the soil crisis, 18 cases were related to water, 18 of them were related to noise crisis and 13 subjects were related to air crisis. Also, the highest coefficient of importance was related to the soil crisis component (0.411) and the lowest coefficient of importance was related to the air crisis component (0.204). Among the textbooks; science books dealt with the environmental crisis more than any other book. In the next place were the Farsi books (reading) and finally the social studies books. No other cases for the attention to the environmental crisis were observed in the other elementary school textbooks.
