Da luz à energia: como os livros didáticos abordam os fenômenos físicos e biológicos que compõem a fotossíntese
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Abstract
Photosynthesis is a vital process through which living organisms convert solar energy into chemical energy. It is essential for sustaining life on the planet as it enables nutrients and oxygen production. Due to its incorporation of physical, chemical, and biological processes, photosynthesis is a good model to an interdisciplinary approach. One of the widely used resources in classrooms is textbooks. Textbooks play a crucial role in the educational process, as they provide structural and content guides to teachers and students. By offering consolidated information, they contribute to the understanding and assimilation of fundamental concepts, fostering a solid foundation for learning. Considering this, this work aims to enhance the teaching of photosynthesis through an interdisciplinary approach. The methodology employed includes a literature review, integrating aspects of both Physics and Biology in photosynthesis, and a critical analysis of Biology, Physics, and Natural Sciences textbooks designed for high school education, with a focus on photosynthesis. Based on identified gaps, interdisciplinary strategies were proposed to provide a more comprehensive and contextualized understanding of the phenomenon. The analysis of textbooks revealed a significant lack of integration between Physics and Biology in explaining photosynthesis. The deficit in presenting key concepts, such as the relationship between light and photosynthesis, exemplifies the need for improvements in these instructional materials. To enhance the teaching-learning process of photosynthesis, we proposed some activities that highlight the physical and biological principles involved, such as those exploring details about the absorption spectrum of chlorophyll and the light-chlorophyll interaction. Another suggestion involves using photosynthesis as a study element for the laws of thermodynamics. It would also be interesting to emphasize how photons interact with photosynthetic pigments, leading to molecule excitation. Through the implementation of such strategies, the teaching of photosynthesis can be truly interdisciplinary, potentially impacting student learning.
