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教材分析《钟摆的秘密》是《时间的脚步》单元的第二部分内容。学生在学过《精确时间的步伐》一课后,继续学习有关钟的知识。本节课旨在通过学生反复实验探究去发现和掌握钟摆的运动规律,并能用已学过的知识解决实际问题。要求学生能够使用“控制变量”的方法搜集
Textbook analysis “pendulum’s secret” is “the footsteps of time” second part of the unit. After learning the lesson “Steps in Precise Time,” students continue to learn about bell. This lesson aims to discover and master the pendulum’s law of motion through repeated experiments and exploration by students and to solve practical problems with learned knowledge. Students are asked to collect using the “control variables” method