论文部分内容阅读
我在分数应用题教学中,为了培养学生在不画线段图分析的情况下也能运用抽象思维的方法,迅速、灵活地解答分数应用题的能力,经常结合应用题中的关键句(含有分率的句子)采用言语直观方式,进行以下五个方面的训练,收到了较好的效果。 (一)分数意义的叙述训练。这是运用线段图形成直观映象后进而摆脱线段图直观的一项叙说训练。训练方式是:教师首先出示关键句,然后让学生说出句子中分数的实际意义。如让学生说出“某班女生人数比男生人数少1/5”中的“1/5”是表示把男
In my teaching of fractional application problems, in order to train students to apply abstract thinking methods without drawing line-segment analysis, I can quickly and flexibly answer the abilities of fractional application questions. I often combine the key sentences (including points Rate of sentence) using the intuitive way of speech, the following five aspects of training, received good results. (A) Narrative training of meaning. This is the use of line art to create an intuitive image and then get rid of the intuitive representation of line art training. The training method is: teachers first show the key sentence, and then let the students say the actual meaning of the sentence in the score. If let students say “a class of girls less than the number of boys 1/5” in the “1/5” is that the male