O caminho da água pelo corpo humano: circuito integrador dos sistemas

Abstract

Significant learning is the great challenge faced by all education professionals. Space outside the classroom is extremely dynamic, while educators are still stagnant in a poorly motivated classroom. In Biology teaching, the human body is seen in a segmented and unconnected way, making it difficult to understand the functioning of organs and systems and their interactions for the capture and use of water and nutrients. Thus, the aim of ther study was construction of a didactic sequence that approaches the path of water in the human body, from water intake to urinary excretion, demonstrating the integration of the digestive, cardiovascular and urinary systems. The project was developed in Elisiário Matta College, in the city of Maricá, Rio de Janeiro, with 120 students in the second year of regular morning high school. The stages of individual drawing of the human body were developed, discussion and lecture about the human body, making collective drawing of the human body, making scripts about the path of water in the body, evaluation of the drawings and the theme and the creating a video. Most of the students had as their previous design a continuous tube between the digestive and urinary systems. After an expositive lecture with illustrations of the systems there was a change to the ideal conceptual model, with the presence of the three systems (digestive, circulatory and urinary). Through the realization of a self-assessment questionnaire the students realized the evolution between the first and second design of the human body, as well as the difficulties involved. The study of body systems in an integrated way was seen as unpublished and positive by them. As a final proposal, the creation of a film script on the great water route culminated in the construction of a video, in a stop motion format, with the participation of the students. The use of different didactic resources, such as individual and collective practical activities, the assembly of a script, the construction of visual materials, developed with the students, are motivating and facilitating instruments to the proper understanding of the water course in the human body.