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结合物质循环和能量流动的特点,以学生动手制作的生态瓶简报为探究对象,合理设计探究问题。从生态瓶中生物长时间存活问题,探究生态系统物质循环;从物质循环必须借助能量推动,探究生态系统能量流动。探究过程中注重培养学生小组合作、建构模型的能力,并通过对探究问题的引导与扩展,充分激发学生的求知欲和探究思维,实现教学目标的有效达成。
Combining with the characteristics of material circulation and energy flow, ecological bottle bulletin made by students is explored as the object of investigation, and the question of inquiry is reasonably designed. From the ecological bottle of living organisms for a long time to explore the ecosystem material cycle; from the material cycle must promote the use of energy to explore ecosystem energy flows. In the course of inquiry, students should pay attention to cultivating students ’ability of team cooperation and constructing models. By guiding and expanding inquiry questions, students’ curiosity and exploration thinking should be fully stimulated so that teaching objectives can be effectively reached.