三年以内自己的变化英语作文【一】
“整万数的改写”的知识点相对简单，所以学生很快就发现了改写方法，整体掌握较好；对于“用四舍五入法求近似数”教学效果不理想。
“四舍五入法”虽然是本节课学生才认识，但其实在二、三年级学估算时就已经接触，所以在教学这一内容之前，我复习了以前学的找两位数或三位数的近似数，帮助学生回忆找近似数的方法。我因为估计学生能正迁移，所以对于省略万位后面的尾数需要看千位这一环节没有过多强调，使得有些学生没有完全理解；而紧跟其后的做一做要分别省略不同数位后的尾数，则让学生不知所措。
反思这节课的教学，不理想的主要原因是在教学例6时，没有留足够的时间让学生理解方法，教学过快，虽然后面也进行了有针对性的训练，但学生也只是依葫芦画瓢，没有掌握方法。
这节课让我再次感受到：难点部分教学节奏一定要慢，要留足够的时间让学生去理解、消化。
三年以内自己的变化英语作文【二】
1、 看。省略万位后面的尾数我们看千位。
2、 判。判断千位上的数是否小于5，小于5的“四舍”，大于或等于5的“五入”。
有一部分学生在判断千位上的数时有时由于不认真判断错误。例如：145700≈14万。
3、 “≈”。用“≈”连接。
有一部分学生分不清“≈”和“＝”，总会用“=”连接。例如：157000＝16万。
4、 最后写上万字。
“四舍五入”法对学生来说确实是有一定的难度，当把整万的数和非整万的数混到一起时就会分不清应该用“=”还是“≈”。
这一节的知识需要学生多加强练习，再给学生分析“四舍五入”法，让他们对这里的知识掌握的更加牢固。
三年以内自己的变化英语作文【三】
在复习铺垫时，由于学生已经学过亿以内数的.读法和写法，我出示了一些整万数和一些非整万数，让学生先通过读数和写数发现整万数和非整万数的特点引出本节课的课题，效果很好。
三年以内自己的变化英语作文【四】
dear xxx,
hi,i am xxx,allow me to tell you something about my hobbies and living habits.i think i am a social person,i have a great circle of friends,they all admire me for my great sense of humour.i am talkative ,i am on the school debate team and i always win.i like reading magazines or newspapers after class,i think they can help me know more about the world.i also do well in my school work.i also like playing sports especially ball games such as basketball,volleyball and soccer.but i am not very good at it.i think i have a healthy life style ,my living habits are prettey good.i always get up early in the morning,i never go to school without breakfast.and in the evening ,i never go to bed late,i finish my homework very fast.but only one living habit is not very healthy,that is ,i have a bad habit of eating dessert.
what are your hobby and living habits?could you tell me more about your life?please contact me as soon as possible.
looking forward to your reply.
yours,
xxx
三年以内自己的变化英语作文【五】
在教学亿以内数的改写时，我先让学生自己独立完成，然后集***流，并让学生总结亿以内数的改写方法，一个孩子说：“把各级的四个零去掉改写成万字”。我及时表扬并强调顺利的完成了这个教学环节。这个环节充分体现了学生是学习的主人，教师是引导者、合作者这一新课程理念。
本节课的不足之处是在教学例6时没有体现学生的主体地位。亿以内数的省略是本节课教学的难点，为了突破难点，在这个环节我先出示了课本上的例6，地球的直径大约是多少万千米?太阳的呢?出示地球和太阳的图片让学生观察，我怕学生不会就一步一步的引导，问题是地球的直径是多少万千米就是让省略万位后面的尾数求近似数，省略万位后面的尾数要看哪一位上的数?在我的引导下学生虽然程度好的同学掌握了方法，但是在学习程度不太好的同学却似懂非懂。反思这个环节的教学，我觉得主要是没有发挥学生的主体作用，应让学生先尝试完成，在集***流订正，这样教师在巡视时可以把错的和正确的都板书在黑板上让学生去判断讲解，虽然有点浪费时间，但是一定会比我的这种方法效果好。
三年以内自己的变化英语作文【六】
Dear wu Yanzu:
You are my favourite superstar.I am addicited to your films and some other works.Our teacher asked us to write a letter to a superstar. You come to mine mind firstly. I am inertested in a question.That is why you are not good at our mother tongue.I am anxious to eat your cooking.It must be taste good.Oh i can not wait.How I wish I could taste it at once. You hurt your nose in an accident.I am very wooried about that,can I have a look at your nose.Yang Qianhua is a so good singer.You two look like a couple,and you will be good lovers.
Yours
XXX
三年以内自己的变化英语作文【七】
By the time you read this you will be 30. At the age of 18 I had so many hopes and dreams about where you'd be, what you'd be doing and with whom you'd spend your life with.
Right now I hope that you have traveled and seen everything you've always wanted to, both in Canada and overseas, and maybe even settled down somewhere in Australia doing some research in the field of biology (genetics.
I hope you're married to the man of your dreams. The man of mine is Gwynn. He is originally from South Africa (another place I wish to visit.
You'll probably have two children of your own – a girl(Michaela Anne and a boy (name yet to be decided.If everything goes according to plan you'll be living in Australia in a big house in a small town outside of a big city with a lot of land, a dog, Gwynn and your two beautiful children. Hopefully you have a career in the medical field, maybe doing research in genetics. Gwynn will be a computer programmer and you will be doing alright for yourselves.
However, if things don't go according to plan for you, I wish you all the love, happiness and joy in the world and don't settle for anything less than the best since that is absolutely what you deserve.
Live long, be happy and live life to it's fullest.
Love Sherri "18″
三年以内自己的变化英语作文【八】
Dear July,
Hello,I am Dick! I am good looking with curly hair.I wear a pair of glasses because I study hard!I am a bit tall .My dream is becoming a teacher.Because I want to work with students.And my hobby is reading.
Let me introduce(介绍my family.I have a warm family.The members (成员of my family are my mom,dad,and I.My mom is very beautiful and she is kind to (对某人慈祥me.My dad is very strict(严厉的 and I am afaid of(害怕某人 him.We are all good with(和某人相处得好 anyone.
What about you and your family?Please write me a letter soon!
Yours
Dick
