一、注重实验材料,提高实验有效性(一)注重实验材料的选择材料应该能够也应能够吸引和适应特定年龄的孩子们,让他们通过适当的努力,能够最终获得发现,而不是被迷惑和打击。有结构材料是对自然现象或运动变化“浓缩”的材料。必须组成启发揭示科学概念的结构,从而启发学生去探究。面对带有启发性的学习,学生会产生自主学习的冲动,产生要探究的问题,无需教师的启发。(二)注重实验材料呈现的顺序 First, focus on experimental materials, to improve the effectiveness of the experiment (A) focus on the choice of experimental materials Materials should be able to and should be able to attract and adapt to a particular age of children, so that they can with appropriate efforts to eventually find, rather than being confused and Hit Structured materials are materials that are “concentrated” toward natural phenomena or movement changes. Must be formed to inspire the structure of revealing the concept of science, so as to inspire students to explore. Faced with instructive learning, students will have the impulse to learn independently, resulting in problems to be explored without the inspiration of a teacher. (B) pay attention to the order of experimental materials presented