The research work starts from the question: How to contribute to the strengthening of the Living Environment and Physical Environment components of Natural Sciences in young people from 6th and 7th grade of the San Miguel de Gambita Educational Institution? Therefore, the general objective was to strengthen the Living Environment and Physical Environment components in young people of 6th and 7th grade of the San Miguel Educational Institution, Gambita, Santander, through the implementation of playful-pedagogical strategies and for this a sample of 19 students. The type of research that was applied was the qualitative one that allowed the collection and analysis of the data. The methodology used is constructive, framed in the line of research of the Free University: Pedagogy and Didactics in the construction of meaningful learning. The result is an improvement in the acquisition of knowledge of natural sciences and good environmental practices acquired by the educational community through recycling material. The scope of the execution of the project is evaluated as positive by promoting meaningful learning and contextualized to the needs and interests of Post-primary students