2019-2020年六年级下册6.8《二元一次方程》word学案.doc

2019-2020年六年级下册6.8二元一次方程word学案一学习目标1 理解二元一次方程的有关概念2 知道二元一次方程有无数个解，这些解的全体叫做二元一次方程的解集3 能根据所给的二元一次方程，将一个未知数用另一个未知数表示.4能求一些二元一次方程的特殊解二、新课学习：（一）知识回顾：1 方程中的元指的是什么？2. 项的次数是未知数的指数_，例如-3xy的系数是_,次数是_（二）阅读课本67-68页1回答下列问题 （1）含有_个未知数的_次方程叫做二元一次方程. （2）二元一次方程的解有_.2. 指出下面的方程是不是二元一次方程： 3将方程变形成用含有x的式子表示y，并分别求出x=3,x=-6时相应的y的值.4将方程变形成用含有y的式子表示x，并分别求出时相应的x的值.三、课堂检测：1二元一次方程有多少个解？其中的正整数解有哪些？ 2. 求方程3x+2y=8的正整数解3.验证.四思维拓展已知方程 是二元一次方程，求m和n的值.五、小结：六、数学作业：1、完成书P69/EX6.8/1、2、3、；2、完成练习册6.8；3、课课练6.8；4、预习6.9附送：2019-2020年六年级下册6B Unit3综合测试卷一、听录音，选出你所听到的内容。(每小题1分，共10分)( ) 1. A. help B. healthy C. health ( ) 2. A. litter B. little C. letter ( ) 3. A. fruit B. food C. fish ( ) 4. A. diet B. diary C. dentist ( ) 5. A. never B. neck C. need ( ) 6. A. number B. December C. remember ( ) 7. A. meat B. meet C. meal ( ) 8. A. too many B. too much C. so much ( ) 9. A. at a time B. at lunchtime C. on time ( ) 10. A. a little B. a few C. a lot of 二、听录音，选择正确的应答句。(每小题1分，共5分) ( ) 1. A. Yes, I do. B. Yes, she does. C. Yes, she is.( ) 2. A. I have some bread. B. Its a steamed bun. C. Some porridge. ( ) 3. A. Theyre three. B. Two. C. She likes eating eggs.( ) 4.A. Yes, here you are. B. No, I cant. C. No, thank you.( ) 5.A. Yes, they are. B. Yes, there are. C. No, there isnt.三、听录音，根据短文内容判断正(T)误(F)。(每小题1分，共5分)( )1.Jack has two eggs for breakfast every day.( )2.Jack doesnt like vegetables.( )3.Jacks sister doesnt like fruit.( )4.Jacks sister likes strawberries and some chicken for dinner.( )5.Both of Jack and his sister like tomatoes.四、听录音，完成短文。（10分）Sam _ to go to the _, because there is not much food in the _. He_ a small bottle of cola, but he _ drink too much cola, and he buys some fish, after that, he goes home, but the fish is too _, the fish _into the river, Sam feels very sad.笔试部分（70分）一、判断划线部分读音是（S）否（D）相同。（每题1分，共9分） ( )1.world short ( )2. cousin mouth ( )3. mouse house ( )4.through shout ( )5. should would （ ）6.cow snow ( )7.speak sea ( )8.good cool ( ) 9.horse doctor 二、英汉互译。（10分） 1. 有一个健康的饮食习惯 _2.have too much food 3.想和我一起去 4. some porridge and sausages 5. 只喝一点水 6. get out 7. 每天迟睡觉 8.take a small bottle 9. 一次吃得很少 10. keepclean and tidy 三、 单项选择。（每题1分，共15分）( )1.- Can you _some hamburgers for me? Im very hungry. -All right. A. take B. taking C. bring( )2. He _ my teacher in the playground just now. A. meets B. met C. meet( )3.There is _ water in the bottle. A. a few B. a little C. any( )4. How many _ are there in the basket? There are six. A. bread B. mangoes. C.meat( )5. _ your sister _ a healthy diet？ A. Do; have B. Does; has C. Does, have( )6. My teacher likes _ bikes. A. riding B. rides C. ride( )7. _ a healthy diet, there is a lot of fruit and vegetables. A. In B. To C. On( )8. We can eat_ delicious food at Christmas. A. a lot of B. many C. a few( )9._ to the hospital faster, you can take a taxi. A. Get B. To get C . For get( )10. I eat a few noodles _ . A.in dinner B. of dinner C. for dinner ( ) 11.The girl dance _, but the boy does not. A. beautiful B. careful C. beautifully ( ) 12. It _ last year. A. snow B. snowed C. snowy ( ) 13.Id like two _ of milk for breakfast. A. bottle B. cups C. cartons( )14.Can I have _ apple juice? A. some B. many C. any( )15.Liu Tao likes_. A. eat sweets B. eating sweets C. eating sweet 四、用所给词的适当形式填空。（每题1分，共6分）1. He is asking Yang Ling how _ (get) there.2. They stopped the thief and _ (take) him to the police station.3. There_ (be)eight bags of rice in the kitchen this morning.4. I see a few_ (tomato)in the basket.5.What about_ (drink)some coffee? 6.There (be not ) any meat on my plate now.7. I _( visit) my grandparents next Sunday.五、完成下短文，每空一词。（每空0.5分，共5分）Mike likes e_ sweet food. He d_ like drinking water. He only d_ a l_ water every day. He has some bread and milk for b_. He has a f_ eggs every day. Yang Ling likes sweet food, too, but she eats a little at a t_. She eats some f_ every day. She has a lot of noodles for breakfast. S_ she eats an egg, too. Do they have healthy d_?六、根据要求完成句子，每空一词。（每空0.5分，共6分）1. I have some bread and milk for breakfast. (对划线部分提问) _ _ you have for breakfast? 2. There is some fruit and vegetables in a healthy diet. (改成一般疑问句) _ _ _ fruit and vegetables in a healthy diet.? 3. Miss Li often buys things from shops.(用be going to 改写句子) Miss Li _ going to _ things from shops.4.Tim eats a lot of sweets every day.（改成否定句） Tim _ _ a lot of sweets every day. 5.My mother bought a lot of things last Weekends.(改为一般疑问句) _ _ mother _ a lot of things last Weekends?七、根据中文意思，完成下列句子。（每空0.5分，共8分）1. 甜的食物很好吃，但是对你的牙齿不好。Sweet food _nice, but it is not _ _ your _.2. 你不应当吃太多的肉。 You _ eat _ _ meat. 3. 我能吃一些面包吗？_ I _ _ bread ？4. 她晚饭只吃一点米饭。 She _ _ a _ rice for lunch.5. 你应该把你的书整理得井井有条。You should _ your _ in _.八、阅读理解。10A读一读，根据短文选择正确答案。（每题1分，共5分） Most English people have four meals(餐饭)a day .They are breakfast, lunch, afternoon tea and dinner. People usually have breakfast at any time from seven to nine in the morning. Theyd like to have eggs，bread and milk. English people drink tea or coffee for breakfast. Lunch es at 1:00pm.Afternoon tea is from four to five in the afternoon and the dinner is about half past seven. First they have soup(汤),then they have meat or fish with vegetables. After that they eat some other things such as bananas, apples and oranges. But not all English people eat like that. Some of them have their dinner in the middle of the day. Their meals are breakfast, dinner, afternoon tea and supper and all these meals are very necessary(必要的).( )1. Many English people have _meals a day.A. two B. three C. four D. five( )2. People may have_ for their breakfast according to the passage.A. tea and eggs B. hamburgers and tea C. coffee and salad D. eggs and fish( )3. People have lunch at _.A. anytime B. nine C. five D. one( ) 4. People dont have _ for their dinner.Abananas and apples Bsoup and meat Cmeat and fish Dporridge( ) 5. In some English families, dinner es_.A. in the morning B. at noon C. on Sunday D. in the afternoon B.阅读短文，回答下列问题。（每题1分，共5分）My favourite fruit is apple. I like apples very much , because they are delicious.There are many kinds of apples, and they have different colours: red and green. Many red apples are sweet ,but a lot of green apples are not very sweet .So many people dont like green apples at all.A lot of apples are from North(北方)China. Apples are good for our health,and they can make our faces red and pretty. Do you think so? You can have a try.Dont forget that “An apple a day keeps the doctor away”. 1.Whats the writers favourite fruit?_2.Are all the apples sweet?_3.Do many people like green apples? Why ?_4.Why does the writer like apples?_5.What does“An apple a day keeps the doctor away” mean in Chinese?_ 听力内容1、 听录音，选出你所听到的内容。（听两遍）1.Yang Ling has a healthy diet. 2.Dont litter in the park. 3.Would you like some fish ?4.Does Wang Bing have a healthy diet? 5.I need some noodles for breakfast.6.Do you remember these words?7.For lunch and dinner, she eats some meat and some vegetables.8.Dont eat too much sweet food.9.She eats a little at a time.10.My mother only eats a little rice for lunch. 二、听录音，选择正确的应答句。（听两遍）1.Does Helen have a healthy diet?2.What does Yang Ling have for breakfast?3.How many eggs does Su Hai have every day?4.Can I have some cola?5.Are there a lot of vegetables on the plate?三、听录音，根据短文内容判断正(T)误(F)。(听三遍)Jack likes eggs, bananas and apples. So every day, he has two eggs, one apple, a cup of milk and some bread for breakfast.He likes vegetables a lot. For lunch, he has bananas, some chicken and vegetables. And he likes tomatoes, French fries and ice cream for dinner. His sister likes strawberries, oranges and apples. But she doesnt like vegetables. She often has some hamburgers, one apple and bread for her breakfast. She likes tomatoes, salad and some fish for lunch. For dinner, she likes strawberries and some chicken.四、Sam has to go to the supermarket, because there is not much food in the fridge. He takes a small bottle of cola, but he cant drink too much cola, and he buys some fish, after that, he goes home, but the fish is too heavy, the fish goes into the river, Sam feels very sad.