Suelo: representación mental y gráfica del discente de quinto semestre de Ingeniería Ambiental, UMAR

True teaching is that which encourages the student to develop the need to learn on his own and finds in the teacher a guide, a companion on the journey to attain knowledge and in the group a space for meeting, exchange, discussion and confrontation of ideas. The aims of this article are: i) to integrate and present the information generated by classroom activities during twelve semesters teaching the subject of edaphology; and ii) to highlight the importance of using teaching-learning strategies in the classroom. The article presents the compilation of class work from 2008 to 2021 of the 5th semester subject “Edaphology” of the Environmental Engineering bachelor. The teaching-learning strategy used to activate prior knowledge in the student was the “rain of words”, complemented by drawing. 169 words recorded and drawn during 12 semesters, those with the highest number of repetitions were: “earth” (32) “microorganisms” (30), “plants” (24), “water” (24), “minerals” (22), rock (20) and contaminant (19). Although all the words are related to soil, it is important to highlight the word “contaminant” because it is a word linked to the Environmental Engineering bachelor. Finally, the activity fulfilled its purpose by stimulating and activating the learner's prior knowledge and generating new knowledge in him.