《2022年(秋)五年級(jí)科學(xué)上冊(cè) 7.1《光合作用是怎樣發(fā)現(xiàn)的》教案 大象版》由會(huì)員分享,可在線(xiàn)閱讀,更多相關(guān)《2022年(秋)五年級(jí)科學(xué)上冊(cè) 7.1《光合作用是怎樣發(fā)現(xiàn)的》教案 大象版(8頁(yè)珍藏版)》請(qǐng)?jiān)谘b配圖網(wǎng)上搜索。
1、2022年(秋)五年級(jí)科學(xué)上冊(cè) 7.1《光合作用是怎樣
發(fā)現(xiàn)的》教案 大象版
1 光合作用是怎樣發(fā)現(xiàn)的
課程標(biāo)準(zhǔn)要求:
1培養(yǎng)學(xué)生初步的探究能力.
2通過(guò)分析科學(xué)家們建立學(xué)說(shuō)的過(guò)程和方法,學(xué)習(xí)如何更好地分析事實(shí)與證據(jù),并得出既論
教學(xué)目標(biāo):
1.使學(xué)生了解光合作用發(fā)現(xiàn)的過(guò)程;學(xué)習(xí)科學(xué)家們鍥而不舍的探究精神。
2.培養(yǎng)學(xué)生初步的探究能力。
教學(xué)案例:
1.重點(diǎn)使學(xué)生了解光合作用發(fā)現(xiàn)的過(guò)程,學(xué)習(xí)科學(xué)家們鍥而不舍的探究精神。難點(diǎn):通過(guò)分析科學(xué)家們建立學(xué)說(shuō)的過(guò)程和方法,學(xué)習(xí)如何更好地分析事實(shí)與證據(jù),并得出結(jié)論
2.教法學(xué)法:教法:引導(dǎo)法,分
2、析法。學(xué)法:閱讀法理解法,討論法。
教學(xué)流程
我們已經(jīng)學(xué)過(guò)光合作用的在植物生長(zhǎng)過(guò)程中的重要。那么,光合作用是怎樣發(fā)現(xiàn)的呢?今天我們就來(lái)學(xué)習(xí),研究這個(gè)問(wèn)題。(板書(shū)課題)
請(qǐng)同學(xué)們打開(kāi)書(shū)閱讀92頁(yè)-93頁(yè)前兩自然段內(nèi)容后分組討論。
1.小組匯報(bào)交流情況。
2.得出結(jié)論,海爾蒙特實(shí)驗(yàn)證明:水分是植物體建造自身的原料。
3.接著,英國(guó)化學(xué)家約瑟夫:普里斯特利設(shè)計(jì)并做了這樣的實(shí)驗(yàn):
4.分組實(shí)驗(yàn) 實(shí)驗(yàn)后得出結(jié)論:植物有時(shí)能把壞空氣變好,有時(shí)也會(huì)把好空氣變壞。
5.到1779年夏天荷蘭科學(xué)家英格豪斯做了500多次實(shí)驗(yàn)進(jìn)一步得出結(jié)論。
3、
6.分組實(shí)驗(yàn)后得出結(jié)論:只有綠葉和綠枝才能真正把空氣由壞變好。
7.又經(jīng)過(guò) 瑞士牧師謝尼伯德國(guó)科學(xué)家末里斯薩克斯等一代又一代科學(xué)家不懈的努力。終于了光合作用的秘密:在陽(yáng)光的作用下,植物的綠葉利用二氧化碳和水合成碳水化合物,產(chǎn)生了氧氣。即:水+二氧化碳->碳水化合物+氧氣
鞏固練習(xí):
按照“土壤汁”的說(shuō)法,植物生長(zhǎng)的需要的物質(zhì)全部來(lái)自于土壤。你同意這種說(shuō)法嗎?
海爾蒙特用實(shí)驗(yàn)證明,柳樹(shù)長(zhǎng)大需要的物質(zhì)來(lái)自雨水,他的結(jié)論正確嗎?
普里斯特利設(shè)計(jì)的實(shí)驗(yàn)想證明什么?他得出的結(jié)論是什么?
豪斯的實(shí)驗(yàn)證實(shí)了陽(yáng)光對(duì)植物的作用,他的依據(jù)是什么?
4、 謝尼伯的貢獻(xiàn)是什么?
為什么說(shuō)光合作用是生生不息的原動(dòng)力?你對(duì)這句話(huà)是怎么理解的?
總結(jié):通過(guò)學(xué)習(xí)本課,這些科學(xué)家們對(duì)科學(xué)研究的執(zhí)著與懈而不舍的精神是那么值得我們學(xué)習(xí)呀。
附送:
2022年(秋)五年級(jí)英語(yǔ)上冊(cè) Unit1 Goldilocks
and the three bears教案 譯林版
立足基礎(chǔ)點(diǎn)
一、 看圖寫(xiě)單詞。
5、
二、翻譯下列詞組。
1.在學(xué)校 2.正合適
3.一座新房子 4.each other
5.be afraid 6.in front of .
6、
三、根據(jù)圖片填詞。
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
7、big one .
四、 選擇填空。
( )1. There are______students in the classroom.
A. some B. any C. a
( )2. Shall______go and play there?
Ok. Let’s go.
A. us B. our C. we
( )3. __________some boys under the trees.
A. I
8、s 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
開(kāi)拓新思維
五、根據(jù)句意,選擇正確的單詞填空。
1. The
9、re 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. Let’s go and __________ the classroom. (look, have a look)
六、按要求完成下列各句
10、。
1.There are some books on the desk.(改為一般疑問(wèn)句)
Are ________ _________ books on the desk?
2.There are three girls in the forest. (對(duì)劃線(xiàn)部分提問(wèn))
_________ __________ girls are there in the forest ?
3.Liu Tao is between Ma Lin and Tom. (對(duì)劃線(xiàn)部分提問(wèn))
_________ _________ Liu Tao ?
4. a glass of , is
11、 , there , on , milk, table, the(.)(連詞成句)
___________________________________________________________
.
5.a(chǎn)ny, are, window, umbrellas, there, in front of,the(?)(連詞成句)
_________________________________________________________
登高我爭(zhēng)先
七、
12、根據(jù)首字母完成下列句子,每空一詞。
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. It’s a small one, but there are a lot of f_____ and t_______.
A: Let’s go and play there.
英語(yǔ)歡樂(lè)谷
be的用法口決
我用am,你用are,is連著他,她,它。
單數(shù)名詞用is
13、,復(fù)數(shù)名詞全用are。
變疑問(wèn),往前提,句末問(wèn)號(hào)莫忘記。
變否定,更容易,be后not莫忘記;
疑問(wèn)否定任你變,句首大寫(xiě)莫遲疑。
Period2
立足基礎(chǔ)點(diǎn)
一、 判斷下列單詞畫(huà)線(xiàn)部分讀音是否相同,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. first term
( )5.nice cake
二、-將這些打亂的字母重
14、新組合組成一個(gè)單詞并寫(xiě)出漢意。
1.adhr( )___________ 2.sibdee( )_________
3.tenh( )___________ 4.idfn( )_________
5.otsf( )__________
三、請(qǐng)寫(xiě)出下列詞的反義詞。
1.soft ___________ 2.big___________
3.cold__________ 4.full__________
5.in front of __________
四、選擇填空。
1. I’m happy __
15、__________ 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.It’s 12 o’clock.Are you __________? (hungry, cold)
開(kāi)拓新思維
五、在II欄中選出I欄中句子
16、的正確答語(yǔ),將其序號(hào)填入括號(hào)內(nèi)。
I II
( ) 1. How do you go to school? A. Five yuan.
( ) 2. I’m thirsty , mum. B. There are three.
( ) 3. How much is it ? C. Here’s some water for you.
( ) 4. Is ther
17、e a puter room in it ? D. By bus
( ) 5. How many classrooms are there ? F. No,there isn’t.
六、根據(jù)中文意思,完成下列句子。
1. 你們學(xué)校有圖書(shū)館嗎?
___________ there a library in ___________ school?
2.這個(gè)房子有多少房間?
___________ many __________ are there in this ____________?
3.在窗旁邊有一些花。
There ar
18、e ___________ ____________ beside the window.
4.小女孩非常害怕熊。
The girl _______ ________of the bear_______ ________ .
登高我爭(zhēng)先
七、閱讀理解。
I have a picture of my school. There is a new building (建筑物)in the middle of (在...中間)the picture. There are many flowers and trees in front of the building. There’re
19、some classrooms in it. There’re 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. They’re playing happily(快樂(lè)地).
There are some houses next to the building. They are our library and readin
20、g rooms. How many windows are there in every reading room? Four. So it’s bright(明亮的). Now some students are reading.
We love our school very much.
根據(jù)短文內(nèi)容,判斷正(√)和誤(×)。
( )1. I have a picture of a new classroom.
( )2. There is a new building in the school.
( )3. There are twenty-five des
21、ks in every classroom.
( )4. There aren’t any flowers or trees near the new building.
( )5. There’re four windows in the building.
英語(yǔ)歡樂(lè)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".
老師:湯姆,您為什么每天上學(xué)遲到?
湯姆:我每次路過(guò)拐角,一個(gè)路標(biāo)上面寫(xiě)著:"學(xué)校----慢行。"