最近,我们用了个适合考察小学二年级儿童智力的算术趣题,考察了若干名三、四年级儿童,高中一年级、中师二年级学生,其结果,多数是粗心疏忽,因思考不严密而答错。 这道题是“钟敲5下要用20秒,敲10下要用多少秒?” Recently, we used an arithmetic question that was suitable for examining the intelligence of children in the second grade of elementary school. We inspected a number of third and fourth grade children, first year of high school and second year of secondary school. The result was mostly careless negligence, The wrong answer. This question is “how many seconds should it take 20 seconds for knocking 5 and 10 seconds for knocking?”