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一、关于长度的测量教学大纲要求:学生学会正确使用刻度尺。意思是说,使学生在理解的基础上能正确使用刻度尺进行正确的测量(包括正确记录数据),并会由测量结果判断刻度尺的准确度。但课本p.12练习一中没有配备一道此种习题。为了考核学生的掌握情况,每年的统一考题中这部分往往出现。比如:①用一刻度尺去测量某木板的长度为120.03厘米,这表示测量的结果准确到……………………,刻度尺的最小刻度是………………。若换用最小刻度为厘米的卷尺来测量这木板的长度,测量的结果应为………………。②某同学用刻度尺测出某物体长为50.0厘米。这把刻度尺的最小刻度是………………,测得的准确值为………………,估计值为…………
First, the length of the measurement syllabus requirements: Students learn to use the scale correctly. This means that students can correctly use the scale to perform correct measurements (including recording data correctly) on the basis of understanding, and judge the accuracy of the scale by the measurement results. However, this type of exercise is not included in exercise book p.12. In order to assess the mastery of students, this part of the annual unified examination questions often appears. For example: 1 Use a scale to measure the length of a board of 120.03 cm, which means that the measurement results are accurate to ......................., and the scale of the scale is ................... If the length of the board is measured using a tape measure with a minimum scale of centimeters, the result of the measurement shall be ................... 2 Some students used a scale to measure a length of 50.0 cm. The minimum scale of this scale is ......................, the measured exact value is ...................., the estimated value is.........