【 – 小学作文】
篇一:《《认识图形》这一课时,我设计了“忆—-看—–摸—-找—-描》
答： 我说说我在教学人教版一年级数学下册《认识图形》这一课时，我设计了“忆—-看—–摸—-找—-描—–练”等一系列的操作认识平面图形，帮助学生积累更多的数学活动经验，让学生更好的体会数学学习的趣味性以及与现实生活的密切联系。例如：
忆：在认识新朋友之前，回忆老朋友，即学习平面图形之前，先复习立体图形；
看：观察物体的一个面的形状是什么样的；
摸：动手摸物体上的表面，初步感受面的特征；
找：从多媒体课件演示中，从生活中找学过的图形；
描：从立体图形上搬出来画到纸上。使学生通过观察和比较体会到，长方体的面与正方体的面不一样，如果把长方体的一个面描下来，描出的图形是一个长方形，如果把正方体的一个面描下来，描出的图形是一个正方形，等等，通过用体“描”面，进一步感受“面在体上”；练：设计多种形式进行练习。让学生在做中学，做中想，将“做”中感受到的体验“数学化”，使教师教的内容变成了学生学的活动，教数学变成了学生创造性地学数学，学生自己建构的数学，体现了数学知识形成的过程性。
篇二:《8,27——————-高一英语语法填空专题练习_新课标_人教版_必修一、必修二》
高一英语必修一语法填空专题练习
Unit
This is a true story. It happened in Amsterdam, Holland the early 1940s after the German
Nazis had ___2___(occupy) most of Europe. The Nazi Party ruled Germany from 1933 to 1945. One of their key (policy) was__4__ (kill) all the Jews in Europe. If any persons (know) to be Jews were found, they would be sent to concentration camp farther east, mostly in Poland.
Families were separated and transported in trains. For many days, they went
food, water, sanitation or fresh air. __7___(avoid) this terrible fate, some Jewish families went into hiding, often with the help of Anne and her family moved to escape from (kill) by Nazis.
Unit 2
In only fifty years, English spoken and used in the world. English is the working language of most international organizations, international trade and tourism. Businessmen and tourists often come to China without being able to speak Chinese businessmen, taxi drivers and students talk with them using English. English is also the language of (globe) culture, such as popular music and the Internet. You can listen to English songs the radio
use English to communicate people around the world through the Internet. With so many people good knowledge of English.
Unit 3
had the idea to cycle along Mekong River it begins to where it ends. The Dai live near the Lancang River, the Chinese part of the river that (call) the
Mekong River in other countries. Wang Wei soon got them interested in cycling too. She insisted that we
Unit 4
At 3:42 a.m. everything began to shake. It seemed the world was ____2___ an end!
Eleven kilometers____3_____(direct) below the city the greatest earthquakes of the 20th century began. It was heard in Beijing, ____4___ is one hundred kilometers away. One – third of the nation felt it. A huge crack that was eight kilometers long and thirty meters wide cut __5____ houses, roads and canals. Steam burst from (hole) in the ground. Hard hills of rock became rivers of dirt. In fifteen terrible seconds a large city lay in ruins . Two-thirds of the people died or _____7_____(injure) during the earthquake. Thousands of families kill) and many children were left ___9___ parents. The number of people were killed or injured reached more than 400,000.
Unit 5
My name is Elias. I am a poor black worker in South Africa. The time (1)_______ I first met
Nelson Mandela was a very difficult period of my life. I was twelve years old. It was in 1952 and he had opened a black law firm to advise poor black people (2)_______ their problems.
I began school at six . The (3)_______ where I studied only two years was three kilometres away. I had to leave , (4)_______ my family could not continue to pay the shool fees and the bus (5) ______ . I could not read (6)______write. After trying hard , I got a job in a gold mine . This was a time when one
had got to have a passsbook to live in Johanneburg. (7)______(sad) I did not have this passbook because I was not born there and I was worried (8)_____ whether I would be out of work.
The day when Nelson Mandela told me what to do and helped me was one of the days of my life . He told me how to get the correct papers so I could stay in Johanneburg. I never forgot
(10) ______ kind he was and when he organized the ANC Youth League , I joined it as soon as I could .
高一英语必修二语法填空专题练习
Unit 1
In September, 1941 the Nazi Germany） army was near St Petersburg. This was a time the two countries were at war. However, before the Nazis could get to the summer palace, the Russians were only able to remove the furniture and small art objects from the Amber Room. But some of the Nazis secretly stole the Amber Room itself. In less than two days, 100,000 pieces of the room were
put inside twenty-seven wooden boxes. There is no doubt the boxes were then put on a train Konigsberg, at that time a German city on the Baltic Sea. After that, what really happened to the (remain) a mystery.
new Amber Room at the summer palace. (follow)old photos, the new room has been made to look much like the old one. In spring of 2003, it was ready for the people of St Petersburg (celebrate) the 300th birthday of their city.
Unit 2
Atlanta was a Greek princess. She was very beautiful and could run faster than man in
Greece. But she was not allowed to run in the Olympic Games. She was angry that she said to her father she would not marry anyone who could not run faster than her. Her father said she must marry and asked her
she wanted to marry a king or prince. But Atlanta replied, “I will only be married to a man who can run faster than me. When a man says he wants to marry me, I will run as fast as me, he (kill). No one will be pardoned.”
Many kings and princes wanted to marry Atlanta but when they heard of her rules, some of them amazed when he heard of Atlanta’s rules. “Why are these men so (fool)? Why will they let be killed because they cannot run as fast as this princess?” Then when he saw Atlanta come out of her house marry Atlanta—- or die!” he said.
Unit 3
No one could recognize me after I got my new transistors in the were
times when my size was (total) changed. I became small and thin but I got cleverer and cleverer, quicker and quicker. And my memory became so large I couldn’t believe it! But I was always so lonely in the early 1960s, they gave me a family (connect) by a network. I could share information others and we could talk to each other. At about the same time we learned to talk to humans using BASIC. I was brought into people’s homes in the 1970s. Since then, my family and I information and communicate with each other around the world by the Internet. I love (use) to connect people who aren’t close enough to speak to each other. I have truly been built to serve the human race since my birth.
Unit 4
Many animals (disappear) during the history of the earth. (famous) of
these animals were dinosaurs. They lived on the earth humans came into being. There were many different species of dinosaur and several of them have been found in China. The eggs of twenty-five species have been found in Xixia County, Nanyang, Henan Province, and not long ago a rare new species of bird-like dinosaur was discovered in Chaoyang County, Liaoning Province. The scientists were surprised they could run other dinosaurs, but also climb trees. They could tell this from the way the bones
(join) together.
Dinosaurs died quickly about 65 million years ago. Some scientists think it was
after a large rock hit the earth and put too much dust into the air. Others think the earth got
hot for the dinosaurs to live on any more. Nobody knows sure. In the same way there are animals that have died out more recently and no one knows why. Listen to the story about the dodo, an animal that has disappeared from the earth.
Unit 5
However, there was one band that started in a different way. It began as a TV show. The
musicians of the band was formed played jokes each other as well as played music. Their music and jokes were based loosely on the band called “The Beatles”. The TV organizers
for four musicians who were lively and who could make good music. They put an advertisement in a newspaper good enough. They had to use actors for the other members of the band. Actors may not be able to sing so at first other musicians sang the songs for the programme the band pretended to sing them.
Their attractive performances by other groups and their fans supported them
fiercely. Each week the group that was called “The Monkees” would play a song or two written by other musicians. However, after a year or so in which they became about their work, “The Monkees” started to play their own instruments and write their own songs like a real band. Then they produced their own records and started touring and playing their own music. They became even more popular than “The Beatles” in the USA and sold even more records. However, the band broke in about 1970, but
必修一[参考答案]
Unit 1
Keys: 1. in 2. occupied 3. policies 4. to kill 5. known
6. without 7. To avoid 8.non-Jewish 9. when 10. being killed
Unit 2
Key: (1) has developed (2) widely (3) Chinese (4) global (5) on (6) or (7) with (8)
communicating (9) more and more important (10) a
Unit 3
Keys: 1. have dreamed 2. taking 3. was 4. that 5. the 6. where 7. is called 8.
find 9. determined 10. in
Unit 4
Keys：1.that; 2. at ; 3. directly ; 4.which; 5. across ; 6.holes; 7. were injured ; 8. were killed
9. without; 10. who
Unit 5
Keys: 1. when 2. on 3. school 4. because 5. fare 6.or 7. Sadly 8.about 9. happiest
10. how
必修二[参考答案]
Unit 1
1．German 2. when 3. that 4. for 5. remains 6. Russians 7. a 8. Following 9. the 10. to celebrate
Unit 2
1. any 2. so 3. if/whether 4. against 5. will be killed 6. sadly 7. foolish
8. themselves 9. to run 10. will
Unit 3
1. 1960s 2. totally 3. that 4. standing 5. until 6. connected
7. with 8. have been used 9. billions 10. being used
Unit 4
1. have disappeared 2. The most famous 3.tens 4. before 5. to find
6. like 7. were joined 8. out 9. too 10. for
Unit 5
1. whom 2. on 3. had looked 4.looking 5. while 6.were copied
7.more serious 8. up 9. reunited 10. celebration
篇三:《3-2-9接送问题,题库教师版》
接送问题
教学目标
3、运用行程中的比例关系进行解题 1
、准确画出接送问题的过程图——标准：每个量在相同时间所走的路程要分清 2、理解运动过程，抓住变化规律
知识精讲
一、 校车问题——行走过程描述
队伍多，校车少，校车来回接送，队伍不断步行和坐车，最终同时到达目的地，即到达目的地的最短时间，不要求证明。
二、常见接送问题类型{——————-，,————–。插柳之恩，无以为报}.
根据校车速度（来回不同）、班级速度（不同班不同速）、班数是否变化分类为四种常见题型：
（1）车速不变-班速不变-班数2个（最常见）
（2）车速不变-班速不变-班数多个
（3）车速不变-班速变-班数2个
（4）车速变-班速不变-班数2个
三、标准解法：
画图＋列3个式子
1、总时间=一个队伍坐车的时间+这个队伍步行的时间；
2、班车走的总路程；
3、一个队伍步行的时间=班车同时出发后回来接它的时间。
模块一、汽车接送问题——接一个人
【例 1】 某校和某工厂之间有一条公路，该校下午2时派车去该厂接某劳模来做报告，往返需用1小时．这
位劳模在下午1时便离厂步行向学校走来，途中遇到接他的汽车，便立刻上车驶向学校，在下
午2时40分到达．问：汽车速度是劳模步行速度的几倍？ 【分析】 车下午2时从学校出发，如图，
B
在C点与劳模相遇，再返回B点，共用时40分钟，由此可知，在从B到C用了40220分钟，也就是2时20分在C点与劳模相遇．此时劳模走了1小时20分，也就是80分钟．
另一方面，汽车走两个AB需要1小时，也就是从B点走到A点需要30分钟，而前面说走完BC
需要20分钟，所以走完AC要10分钟，也就是说BC2AC．走完AC，劳模用了80分钟；走
完BC，汽车用了20分钟．劳模用时是汽车的4倍，而汽车行驶距离是劳模的2倍，所以汽车
的速度是劳模速度的428倍．
【点拨】复杂的行程问题总要先分析清楚过程．我们不把本题看作是一道相遇问题，因为在路程和速度都A
工厂P学校
不知道的情况下，解相遇问题需要初中代数的知识．直接求出相遇点C到两端A、B的长度关系，再通过时间的倍数关系，就可以解出本题．解这道题，最重要的就是找出劳模和汽车间路程及所有时间的倍数关系．通过汽车的用时推出
与BC的倍数关系，再得出答案．
如何避开运用分数和比例，方法有很多．对于这道题，如果认为学校与工厂间相距为3000米，则
做出这道题就更容易了：汽车1分钟走300030100米．AB相距1000米，劳模走了80分钟，所以劳模的速度是每分钟走10008012.5米，汽车速度是劳模的10012.58倍．而实际上，3000AC
米这个附加条件对结果并不起作用，只是使解题人的思路更加清晰．
【巩固】 (2008年“陈省身杯”国际青少年数学邀请赛)张工程师每天早上8点准时被司机从家接到厂里。一
天，张工程师早上7点就出了门，开始步行去厂里，在路上遇到了接他的汽车，于是，他就上车
行完了剩下的路程，到厂时提前20分钟。这天，张工程师还是早上7点出门，但15分钟后他发现有东西没有带，于是回家去取，再出门后在路上遇到了接他的汽车，那么这次他比平常要提
前 分钟到厂。
【解析】 第一次提前20分钟是因为张工程师自己走了一段路，从而导致汽车不需要走那段路的来回，所
以汽车开那段路的来回应该是20分钟，走一个单程是10分钟，而汽车每天8点到张工程师家里，所以那天早上汽车是7点50接到工程师的，张工程师走了50分钟，这段路如果是汽车开需要10分
钟，所以汽车速度是张工程师步行速度的5倍，第二次，实际上相当于张工程师提前半小时出发，
（3025）210（分时间是遇到汽车之后的5倍，则张工程师走了25分钟时遇到司机，此时提前
钟）。
模块二、汽车接送问题——接两个人或多人
（一）、车速不变、人速不变
【例 2】 （难度级别 ※※※）A、B两个连队同时分别从两个营地出发前往一个目的地进行演习，A连
有卡车可以装载正好一个连的人员，为了让两个连队的士兵同时尽快到达目的地，A连士兵坐
车出发一定时间后下车让卡车回去接B连的士兵，两营的士兵恰好同时到达目的地，已知营地
与目的地之间的距离为32千米，士兵行军速度为8千米/小时，卡车行驶速度为40千米每小时，
求两营士兵到达目的地一共要多少时间？
【解析】 由于卡车的速度为士兵行军速度的5倍，因此卡车折回时已走的路程是B连士兵遇到卡车时已走
路程的3倍，而卡车折回所走的路程是B连士兵遇到卡车时已走路程的2倍，卡车接到B连士兵
后，还要行走3倍B连士兵遇到卡车时已走路程才能追上A连士兵，此时他们已经到达了目的
地，因此总路程相当于4倍B连士兵遇到卡车时已走路程，所以B连士兵遇到卡车时已走路程为
8千米，而卡车的总行程为（3+2+3）×8=64千米，这一段路，卡车行驶了64÷40=8/5小时，即1
小时36分钟这也是两营士兵到达目的地所花的时间.
【巩固】 甲班与乙班学生同时从学校出发去公园，两班的步行速度相等都是4千米/小时，学校有一辆汽
车，它的速度是每小时48千米，这辆汽车恰好能坐一个班的学生．为了使两班学生在最短时间
内到达公园，设两地相距150千米，那么各个班的步行距离是多少？
转载请注明：中小学优秀作文大全_作文模板_写作指导_范文大全 » ——————-，,————–。插柳之恩，无以为报 无以为报的意思