论文部分内容阅读
我引导学生复习简单应用题和复合应用题的联系时,采用改编练习方法。首先,我用小黑板出示一个简单应用题:“渡头桥学校运来3000公斤煤,用去1200公斤,还剩多少公斤?”学生读完题后,马上列出了算式,口算出了得数。接着我宣布本课内容是改编练习,并作改编示范:“渡头桥学校运来3000公斤煤。每天烧20公斤,烧了60天,还剩多少公斤?”针对改编示范题,我要求学生对比原题,找出它和原题的差异,使学生明确改编要求是只改条件,不改问题,将原题改为含二步或二步以上计算的复合应用题,然后放手让学生做改编练习。
I guide students to review simple application questions and composite application questions, the use of adaptation exercises. First of all, I use a small blackboard to produce a simple application question: “Duitouqiao school shipped 3000 kg of coal, with 1200 kg, how many kilograms left?” Students read the questions immediately listed in the formula, . Then I announced that the content of this course is adapted exercises and adapted for demonstration: “Duitouqiao School shipped 3,000 kilograms of coal. Burned 20 kilograms per day, burned for 60 days, how many kilograms left?” For the adaptation model, I asked students to compare The original title, to find out the difference between it and the original title, so that students make it clear that the requirements are only changed conditions, do not change the question, the original title with two or more steps to calculate the composite application questions, and then let the students make adaptation Exercise.