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在小学高年级数学教学中,较复杂分数或百分数应用题算是一个难点,常常发现学生对较复杂分数或百分数应用题不易理解,往往无从下手,百思不解,退而远之,产生畏惧心理。为了消除学生畏惧心理,我在教学之中,认真引导学生,采取参与式教学,探索出适应学生的教学方法,收到意想不到的效果。一、要找准哪个数量是“1”较复复杂分数或百分数应用题都有一个明显的特点,即是谁和谁比。教师在引导学生时,一定要抓住这一关键,进一步找出谁比谁,谁被比,便把被比的哪个看着“1”。
In the high school mathematics teaching, it is difficult to apply more complicated scores or percentages. It is often found that the students are not easy to understand the application of more complicated scores or percentages. In order to eliminate the fear of students, I am in teaching, carefully guide students to take participatory teaching, to explore ways to adapt to the students teaching, received unexpected results. First, to find out which number is “1 ” complex complex fraction or percentage of application questions have a clear characteristic, namely who and who than. Teachers in guiding students, we must seize this key to further identify who better than who, who is compared to what is looked at “1 ”.