GAVAZA, Tatiana; LEBEDEVA, Svetlana; PERKOVA, Natalia. MATHEMATICAL TASKS AS A MEANS OF IMPROVING THE ECOLOGICAL CULTURE OF THE FUTURE TEACHERS. ENVIRONMENT. TECHNOLOGIES. RESOURCES. Proceedings of the International Scientific and Practical Conference, Rezekne, Latvia, v. 1, p. 97–102, 2017. DOI: 10.17770/etr2017vol1.2525. Disponível em: https://journals.rta.lv/index.php/ETR/article/view/2525.. Acesso em: 22 jul. 2024.