In the process of study, have the headings in an account book of a lot of need study, but the headings in an account book that I like most is maths, have a variety of writing because of a problem law, can develop cerebrum, very interesting.
在学习的过程中，有许多需要学习的科目，但是我最喜欢的科目是数学，因为一道题有多种写法，可以开发大脑，很有趣。
When remembering on that 3 year, once the teacher discusses the problem on mathematical book, the title is: Rectangular length is 60 meters, wide it is 40 meters, how many square metre is circumference? Our class someone says: “ uses 60+60+40+40, can numerate. Mr. ” says: “ this kind of method, although can numerate, but not handy. ” at this moment, the someone in our class says: “ can be calculated with 60×2+40×2. Mr. ” says again: “ is a bit handy, but not be the handiest. Mr. ” sees raise one's hand of the nobody in the class, spoke right answer: This problem still can use “ 60+40×2, the computational formula that gets rectangular circumference so is: Circumference = of the rectangle is long + wide ×2. ” at this moment my raise one's hand says: This problem should think “ so: 60+60+40+40=60×2+40×2, and the handy operation that 60+406×2 is 60×2+ composition 40×2, it is with this problem exemple, the computation that can know rectangular circumference is formulary. Mr. ” says: “ is right, how did you know to do? We say ” : “ knew! ” this thing, I am remembered still deep. I knew: Ponder over what can come out him summary not only to tell others seriously, let others society, the memory that also can let oneself is deepened, increase oneself thinking capacity.
记得那上三年级的时候，有一次老师讲数学书上的题，题目是：长方形的长是60米，宽是40米，周长是多少平方米？我们班有人说：“用60+60+40+40，可以算出来。”老师说：“这种方法，虽然可以算出来，但是不简便。”这时，我们班里有人说：“可以用60×2+40×2来计算。”老师又说：“有点简便了，但不是最简便的。”老师看班里没人举手了，就说出了正确答案：“这道题还可以用60+40×2，这样就得到长方形周长的计算公式是：长方形的周长=长+宽×2。”这时我举手说：“这道题应该这样想：60+60+40+40=60×2+40×2，而60+406×2是60×2+作文40×2的简便运算，就以这道题为例，可以知道长方形周长的计算公式。”老师说：“对，你们都知道怎么做了吧？”我们都说：“知道了！”这件事，我记忆犹深。我知道了：认真思考不仅可以把自己总结出来的告诉别人，让别人学会，也能让自己的记忆加深，提高自己的思维能力。
Still once, I and mom went building site, mom should measure the circumference of rectangular foundation. I look happy, taking tape measure, helping mom measure the length that gives ground is 200 meters, wide it is 150 meters, I use has learned formula: Long + wide ×2 computation comes out the circumference of foundation. Say to mom next: “ because 200+100×2=600 rice, so its circumference is 600 meters. ” mom's very glad boast boast I, and because I helped mom complete a work, very happy also.
还有一次，我和妈妈去了工地，妈妈要测量长方形地基的周长。我一看乐了，就拿着卷尺，帮妈妈测量出地基的长是200米，宽是150米，我就用学过的公式：长+宽×2计算出来地基的周长。然后对妈妈说：“因为200+100×2=600米，所以它的周长是600米。”妈妈很高兴的夸了夸我，而我因为帮助妈妈完成了一项工作，也十分开心。
Carry these two businesses that concern with maths, I understood: The be closely bound up of maths and life. Maths studies well certainly after I am resolved also.
通过这两件和数学有关的事情，我明白了：数学与生活的息息相关。我也下定决心以后一定好好学习数学。