“用水测量时间”是小学科学五年级下册第三单元的教学内容,教材中的实验设计材料准备简单,数据对比明显,但也存在一些问题。该实验改进主要针对每组数据差别较大等问题,用大号针筒代替塑料瓶,把受水型水钟改成泄水型水钟,使实验操作更方便,数据更准确。 “Water measurement time ” is the third unit of elementary school science fifth grade teaching content, experimental materials in the textbook preparation is simple, the data contrast is obvious, but there are also some problems. The experimental improvement mainly for each group of data such as large differences and other issues, with a large syringe instead of plastic bottles, the water-type water clock into a drainage water clock, the experimental operation more convenient and accurate data.