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学习了“长度和时间的测量”“速度”两课,同学们已经具备测量速度的基础知识和基本技能.测算充水玻璃管中气泡的速度比较容易;但要研究气泡运动的规律就比较复杂,不仅要测算气泡的区间速度,还要对区间速度进行比较和分析.“直线运动”一
After learning the lesson about Length and Time Measurement, students already have the basics of measuring speed and their basic skills, it is easier to measure the velocity of bubbles in a water filled glass tube, but to study the effects of bubble motion The law is more complicated, not only to measure the bubble interval speed, but also to compare and analyze the interval speed.