Inadequate disposal of used cooking oil is a topic currently widely discussed for optimization of this product. It is known that one of the major problems facing our society today is the environmental issue and the various ways of recycling this material. Saponification is a process that underscores the importance of this recycling of frying oil in the general chemical discipline that is applied in high school most often worked in the classroom in a summarized way and it has other particularities and extremely important in educational development. . The general chemistry classes in this process-learning presented concepts and content performing theoretical and practical methodologies of how to recycle the cooking oil used to make handmade soap. However, let us mention as fundamental the measurement of pH in the manufacture of products handled by man. However, it was observed the facts of the development of scientific-practical knowledge inserted in the daily life of students in a participatory, motivating and engaging approach collected from moments such as: diagnosis, intervention (lectures and dialogues) and verification of learning. This research was applied in the classroom / chemistry laboratory at the Federal Institute of Education, Science and Technology Amazonas - IFAM - CMC, with performance, dedication and flexibility on the part of all involved. The methodologies of this work had a huge concern with the recycling of cooking oil transforming it into (homemade soap), a biodegradable product benefiting the environment and the man focused on teaching and learning generating a better quality of life. This work has as general objective to use the production process of the soap based on the reuse of cooking oil, aggregating in the understanding of the sustainable practice and in the teaching of general chemistry for students of the first year of high school.
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