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我提倡同学们写数学日记。有一次，我在课堂上出示这样一题：“学校把扎纸花任务按5∶3分给六年级和五年级。六年级实际扎花84朵，多完成了原任务的20%，原计划五年级扎纸花多少朵？”同学们用了多种方法思考：84÷（1+20%）×3584÷（1+20%）÷5×3［84÷（1+20%）］∶x=5∶3?
I encourage students to write math diary. Once, I was in the classroom to produce such a question: “The school put the task of paper flowers to the sixth grade and the fifth grade by 5: 3. The sixth grade actually took 84 flowers, completing more than 20% of the original tasks The number of students in the fifth grade tied paper how many? ”The students used a variety of ways to think: 84 ÷ (1 + 20%) × 3584 ÷ (1 + 20%) ÷ 5 × 3 [84 ÷ (1 + 20%)]: x = 5: 3?