2022年(秋)五年级科学上册 7.1《光合作用是怎样发现的》教案 大象版

2022年(秋)五年级科学上册 7.1光合作用是怎样发现的教案 大象版1 光合作用是怎样发现的课程标准要求：1培养学生初步的探究能力.2通过分析科学家们建立学说的过程和方法，学习如何更好地分析事实与证据，并得出既论教学目标：1.使学生了解光合作用发现的过程；学习科学家们锲而不舍的探究精神。2.培养学生初步的探究能力。教学案例：1.重点使学生了解光合作用发现的过程，学习科学家们锲而不舍的探究精神。难点：通过分析科学家们建立学说的过程和方法，学习如何更好地分析事实与证据，并得出结论2.教法学法：教法：引导法，分析法。学法：阅读法理解法，讨论法。教学流程我们已经学过光合作用的在植物生长过程中的重要。那么，光合作用是怎样发现的呢？今天我们就来学习，研究这个问题。（板书课题）请同学们打开书阅读92页93页前两自然段内容后分组讨论。1.小组汇报交流情况。2.得出结论，海尔蒙特实验证明：水分是植物体建造自身的原料。3.接着，英国化学家约瑟夫：普里斯特利设计并做了这样的实验：4.分组实验 实验后得出结论：植物有时能把坏空气变好，有时也会把好空气变坏。5.到1779年夏天荷兰科学家英格豪斯做了500多次实验进一步得出结论。 6.分组实验后得出结论：只有绿叶和绿枝才能真正把空气由坏变好。7.又经过 瑞士牧师谢尼伯德国科学家末里斯萨克斯等一代又一代科学家不懈的努力。终于了光合作用的秘密：在阳光的作用下，植物的绿叶利用二氧化碳和水合成碳水化合物，产生了氧气。即：水二氧化碳碳水化合物氧气巩固练习：按照“土壤汁”的说法，植物生长的需要的物质全部来自于土壤。你同意这种说法吗？海尔蒙特用实验证明，柳树长大需要的物质来自雨水，他的结论正确吗？普里斯特利设计的实验想证明什么？他得出的结论是什么？豪斯的实验证实了阳光对植物的作用，他的依据是什么？谢尼伯的贡献是什么？为什么说光合作用是生生不息的原动力？你对这句话是怎么理解的？总结：通过学习本课，这些科学家们对科学研究的执着与懈而不舍的精神是那么值得我们学习呀。附送：2022年(秋)五年级英语上册 Unit1 Goldilocksand the three bears教案 译林版立足基础点一、 看图写单词。 二、翻译下列词组。1在学校 2正合适 3一座新房子 4each other 5be afraid 6in front of . 三、根据图片填词。1.Goldilocks is in the _.2.There is a _. 3. There are three_ in the room.4.There is some _ on the table. 5.There is a small bear _ the big one .四、 选择填空。( )1. There are_students in the classroom. A. some B. any C. a( )2. Shall_go and play there? Ok. Lets go. A. us B. our C. we( )3. _some boys under the trees. A. Is there B. Are there C. There are( )4. All the students _back at school. A. is B. are C. am( )5. My home is _the forest. A. between B.beside C. under开拓新思维五、根据句意，选择正确的单词填空。1. There are_ toys in the box. (some, any)2. How many _ are there in the room? (chair, chairs)3. There _ some hot soup . (is, are)4. It is the _ day of this week. (one, first)5. Lets go and _ the classroom. (look, have a look)六、按要求完成下列各句。1There are some books on the desk.（改为一般疑问句）Are _ _ books on the desk?2There are three girls in the forest. (对划线部分提问) _ _ girls are there in the forest ?3Liu Tao is between Ma Lin and Tom. （对划线部分提问） _ _ Liu Tao ?4 a glass of , is , there , on , milk, table, the(.)(连词成句)_ .5any, are, window, umbrellas, there, in front of,the(?)（连词成句） _登高我争先七、根据首字母完成下列句子，每空一词。1. A: Look, there is a new h_. Are there any chair in it? B: Yes, t_ are two.2. A: Is there a p_near your house? B: Yes. Its a small one, but there are a lot of f_ and t_. A: Lets go and play there.英语欢乐谷be的用法口决我用am，你用are，is连着他，她，它。单数名词用is，复数名词全用are。变疑问，往前提，句末问号莫忘记。变否定，更容易，be后not莫忘记； 疑问否定任你变，句首大写莫迟疑。Period2立足基础点一、 判断下列单词画线部分读音是否相同,相同的用“S”表示，不相同的用“D”表示。( )1.cat plate ( )2.bag orange ( )3.bike five ( )4. firstterm( )5.nice cake二、-将这些打乱的字母重新组合组成一个单词并写出汉意。1.adhr( )_ 2.sibdee( )_3.tenh( )_ 4.idfn( )_5.otsf( )_三、请写出下列词的反义词。1.soft _ 2.big_3.cold_ 4.full_5.in front of _四、选择填空。1. Im happy _ shopping. (going, to go)2. There _ a pen and two crayon in the pencil box. (is, are)3. There are some apples _ the tree. (in, on)4. Would you like _ bananas? (some, any)5.Its 12 oclock.Are you _? (hungry, cold)开拓新思维五、在II栏中选出I栏中句子的正确答语，将其序号填入括号内。 I II( ) 1. How do you go to school? A. Five yuan.( ) 2. Im thirsty , mum. B. There are three.( ) 3. How much is it ? C. Heres some water for you.( ) 4. Is there a puter room in it ? D. By bus ( ) 5. How many classrooms are there ? F. No,there isnt.六、根据中文意思，完成下列句子。1. 你们学校有图书馆吗？ _ there a library in _ school?2这个房子有多少房间？ _ many _ are there in this _?3在窗旁边有一些花。 There are _ _ beside the window.4小女孩非常害怕熊。 The girl _ _of the bear_ _ .登高我争先七、阅读理解。I have a picture of my school. There is a new building （建筑物）in the middle of （在.中间）the picture. There are many flowers and trees in front of the building. Therere some classrooms in it. Therere twenty-four desks for the students and one desk for the teacher in every classroom. Beside the building, there is a big gym. There are some boys and girls in it. Theyre playing happily（快乐地）.There are some houses next to the building. They are our library and reading rooms. How many windows are there in every reading room? Four. So its bright(明亮的). Now some students are reading.We love our school very much.根据短文内容，判断正（）和误（）。( )1. I have a picture of a new classroom.( )2. There is a new building in the school.( )3. There are twenty-five desks in every classroom.( )4. There arent any flowers or trees near the new building.( )5. Therere four windows in the building.英语欢乐谷Teacher: Tom, why are you late for school every day?Tom: Every time I e to the corner, a sign says, School-Go Slowly.老师：汤姆，您为什么每天上学迟到？汤姆：我每次路过拐角，一个路标上面写着：学校-慢行。