giáo án bàn tay nặn bột lớp 3 full httptext.123doc.orgdocument2472568...

GIAO AN DAY HOC BANG PHlTdNG PHAP BAN TAY NAN BOTL6P3C

Mon :Tiinhien & Xa hoi

VE SINH CCf QUAN TUAN HOANTiet 8 Mi:A/ Muc tieu:

Sau bai hoc, hs biet:

- So sanh mtfc do lam viec cua tim khi chdi dua qua sdc hoac luc lam viec nang nhoc vdi luc cd

the difdc nghi ngOi thif gian.

- Neu cac viec nen lam va khong nen lam de bao ve va gitf ve sinh cd quan tuan hoan.

- Tap the due deu dan, vui chcfi, lao dong vufa she de bao ve cd quan tuan hoan.

B/ Chuan bi:- GV :Cac hinh trong SGK trang 18, 19. Cau hoi hs thao luan.

- HS : SGK

C/ Cac hoat dong day- hoc:

HOAT BpNG CUA HSHOAT BpNG CUA GVTL

I/6n dinh

II/ Bai cu:

r Hat

4’

-Neu chdc nang cua tufng loai mach mau ?

-Vong tuan hoan nho co chdc nang gi ?

-Vong tuan hoan ldn cd chtfc nang gi ?

GV nhan xet danh gia .III/Baimdi:

* Gidi thieu bai: Ve sinh cd quan tuan hoan.

* Hoat dong 1: Tim hieu mtfc do lam viec cua tim.

Btfdc 1: Difa ra tinh huong xuat phat .-GV cho HS chcfi tro chdi : “ Con tho “ doi hoi van

dong It .Sau do cho HS hat mua bai : “ Tho di tarn

nang “

GV hoi : Cac em cd cam thay nhip tim va mach cua

minh nhanh hefn luc ta ngoi yen khong ?

Btfdc 2 : Lam boc lo nhhng hieu biet ban dau cua HS

thong qua nhip dap cua tim.

-Hoc sinh tra ldi.

1’

16’

-1 Hs dieu khien ca ldp thiic hien

theo.

- HS nghe , suy nghi de chuan bi

tim toi kham pha.

-HS lam viec ca nhan ghi lai

nhCfng hieu biet cua minh ve mite

do lam viec cua nhip tim khi chdi

dua qua she vdi luc cd the difdc

nghi ngdi, thif gian ( ghi vao vdTH)

-HS lam viec theo nhom 4 : Tong

hdp cac y kien ca nhan de dat ca

hoi theo nhom.

Bifdc 3 : De xuat cau hoi va phifdng an tim toi.

-GV cho HS lam viec theo nhom 4.

-GV chot lai cac cau hoi cua cac nhom: nhom cac cau

hoi phu hdp vdi noi dung bai hoc.

+ Khi ta van dong nhe hoac nghi ngdi thi nhip tim ta

dap nhif the nao?

+ Khi ta van dong manh thi nhip tim cua ta dap nhif

the nao ?

+So sanh nhip dap cua tim khi ta van dong nhe va

Giáo án tự nhiên xã hội lớp 3 (bàn tay nặng bột)http://text.123doc.org/document/2472568-giao-an-tu-nhien-xa-hoi-lop-3-ban-tay-nang-bot.htmhttp://123doc.org/document/2472568-giao-an-tu-nhien-xa-hoi-lop-3-ban-tay-nang-bot.htm

van dong manh ?

Birtfc 4 :Thitc hien phitdng an tim toi kham pha.

-GV hifdng din gdi y HS de xuat cac phitdng an tim

toi, kham pha de tim cau tra ldi cho cac cau hoi dbifdc 3.

Bifdc 5 : Ket luan rut ra kien thitc.

-Cho cac nhom lan litdt trinh bay ket luan sau khi

thao luan.

* Ket luan: Khi ta van dong manh hoac lao dong

chan tay thl nhip dap cua tim vd mach nhanh lu/n binh

thudng. Vi vqy, lao dong vd vui chcti rat co ich U/i cho

boat dong cua tim mach. Tuy nhien, neu lao dong

hoac hoat dong qua site, tim co the bi met, co hqi cho

site khoe.

-Hifdng dan HS so sanh va doi chieu

* Hoat done 2: Lam viec voi SGK tim hieu ve cac

viec nen lam va khong nen lam de bao ve tim

mach .-Cho HS lam viec theo nhom 4 : Quan sat tranh : 1

em neu cau hoi, 1 em tra ldi cac em khac bo sung.

-Cho HS thao luan cac cau hoi :

+ Cac ban dang lam gi ?

-i-Cac ban lam nhif the la nen hay khong nen de bao

ve tim mach ? Vi sao ?

+Hoat dong nao co ldi cho tim mach? Tai sao khong

nen luyen tap va lao dong qua she?

-i-Tai sao chung ta khong nen mac quan ao, di giay

dep qua chat?

-i-Ke ten mot so thitc an do uong ..., giiip bao ve tim

mach va ten nhrfng thitc an do uong, .. lam tang

huyet ap, gay xd vrfa dong mach?

-GV cho HS tit lien he ban than :

+ Em da lam gi de bao ve tim mach.

• Ket luan: ( Phan bong den - SGK)

IV/Cung co - dan do:

-Goi vai HS nhac lai noi dung bai hoc.

- Dan ve nha hoc bai .- Chuan bi: Phong benh tim mach._

-Cac nhom thao luan va trinh

bay.

-Dai dien nhom trinh bay.

-HS so sanh lai vdi hien titdng

ban dau.

10’- HS lam viec theo nhom 4 :

Quan sat tranh 19 va thao luan

cac cau hoi.

- Dai dien moi nhom len trinh

bay ket qua thao luan. Cac

nhom khac bo sung.

3’

-2 HS doc.

Rut kitih nshiem


GIAO AN DAY THEO PHlTdNG PHAP BAN TAY NAN BOTLdp 3C

Mon:Tii nhien & xd hoi

PHONG BENH TIM MACHTiet 9 ML:A/ Muc tieu:

Sau bai hoc,, HS biet :- Ke ten 1 vai benh ve tim mach.

- Hieu va biet ve benh thap tim: nguyen nhan,sit nguy hiem doi vdi HS.- Neu 1 so" each de phong benh thap tim.

- Co y thtfc de phong benh thap tim.

B/ Chuan bi:- Giay kho A3, but da.

- Bang phu.

- Phieu thao luan.


HOAT BpNG CUA GV HOAT BpNG CUA HSTL

I/On dinh: -Hat1

4’ II/ Bai cu:Ve sinh cd quan tuan hoan.

+ Trang hoat dong tudn hodn, bo phdn ndo

lam nhiem vu co bop, day man di khap cct the?

+ Cct the se chet neu bo phdn ndo ngitng lam

viec?

+ Em da lam gi bdo ve tim mach?

III/Baimdi:

* Hoat dong1: Gidi thieu bai mdi

* Hoat dong 2 : Dtfa ra gia thuyet ca nhan.

a) Tinh huong xuat phat :

GV difa ra cau hoi gdi mef :- Ke ten 1 benh ve tim mach em biet?

-Em biet gi ve nguyen nhan va each phong

benh tim mach?

- Ghi ten cac benh ve tim cua HS len bang.

- Tong hop cac y kien HS.

b)Be xuat cau hoi.

TO nhiing tinh huo’ng ban dau GV hifdng HS

neu each phong benh tim mach sau do de xuat

cau hoi lien quan den bai hoc .

-HS tra ldi.

1

5- Benh thap tim, huyet ap cao, xO vffa

dong mach, nhoi mau c0 tim...

-HS neu y kien ban dau cua minh va

ghi vao vd thrfc hanh nhiing hieu biet

cua minh va nhrfng cau hoi hi phat.

-HS neu cau hoi :

-i-Cac benh tim mach thifdng gap la

benh gi ?

+Nguyen nhan nao gay ra benh tim

mach ?

+Cach phong benh nhif the nao ?

6’

*Hoat dong 3 : Kiem tra gia thuyet .Cho HS lam viec theo nhom.

-GV yeu cau HS quan sat cac hinh trong SGK

6’- HS quan sat & thao luan theo YC- Nhom tnidng YC cac ban tap dong


va doc cac ldi hoi dap cua tdng nhan vat trong

cac hinh. Thao luan cac cau hoi sau :- d Ida tuoi nao thddng hay bi thap tim?

- Benh thap tim nguy hiem nhd the nao?

- Nguyen nhan gay ra benh thap tim la gi?

- GV theo doi, nhan xet & ket luan :

+ Benli tliap tim la mot benli ve tim maclt ma tiluta tuoi HS thitting mac .+ Benh nay de lai di chttng nang ne cho van

tim, cuo'i cung gay suy tim .+Nguyen nhan dan den benh thap tim la do

viem hong, viem a-mi-dan keo dai hoac viem

khtip cap khong dtCdc chita tri kip thtii, diit

diem.

* Hoat dong 4: Rut ra kien thtfc bai hoc.

- Ke duMc mot so" each de phong benh thap tim.

- Co y thde de phong benh thap tim.

- YCHS quan sat H 4, 5, 6 SGK, chi vao tdng

hinh va noi vdi nhau ve ND & y nghla cua cac

viec lam trong tufng hinh.

- GV nhan xet.

Ket luan :De phong benh thap tim can

phaUgiQ am ccf the khi trtii lanh, an uong day

du chat, giit ve sinh cd nhan tot, ren luyen than

the hang ngay de khong bi cac benh viem

hong, viem a-mi-dan keo ddi hoac viem khtip

cap.

*Hoat dong 5:Ddnh gid

Bieu difOng va dong vien nhifng ca nhan va tap

vai HS & vai bac si.

- Cac nhom lan lifdt thde hien trifdc

ldp.

T

- QS & thao luan theo nhom doi.

- Mot so HS trinh bay KQ

-HS doc lai.

-Td danh gia lln nhau.3’

the.

IV/ Cung co -Dan do:2’

- Cho 2 HS doc phan Ban can biet.

- Ve nha hoc thuoc phan Ban can biet.

- Tich ede phong benh tim mach trong cuoc

song hang ngay.- Chuan bi: “Hoat dong bai tiet nddc tieu".

- Nhan xet tiet hoc._

-HS doc.

* Rut kinh nghiem:


GIAO AN DAY THEO PHlTdNG PHAP BAN TAY NAN B0T.LCfP 3B

Mon :TUnhien & Xa hoi

HOAT DQNG BAI TIET NlfO'C TIEUTietlOA/ Muc tieu:

Sau bai hoc, HS biet:

- Ke ten cac bo phan cO quan bai tiet nifdc tieu.

- Neu chtfc nang cac bo phan do.

- Neu vai tro hoat dong bai tiet nifdc tieu doi vdi cO the.

B/Chuan bi:- Cac hinh minh hoa/22, 23.- Giay kho A3, but da quang.- Bang phu, phan mau.- Mo hinh/tranh ve hinh 1/22.

B/ Cac hoat dong day- hoc:


I/On flinh Hat1

4’ II/Bai cu:- Ke ten 1 benh ve tim mach em biet?

- Vdi ngifdi bi benh tim nen va khong nen lam gi?

III/Baimdi:

* Hoat dong 1: Gidi thieu bai.

* Hoat dong 2: Tim hieu cac bo phan cua cO quan

bai tiet nifdc tieu :

Bifdc 1 :Difa ra tinh huong xuat phat.

Horn tnfdc Thay da yeu cau cac em ve nha thifc

hanh uong nhieu nifdc va cam nhan cO the sau khi

uong nhieu nifdc thi se nhif the nao. Mdi mot so ban

len bao cao sau khi da thifc hanh .-GV goi khoang 10 em bao cao va hoi ai co cung

cam nhan nhif cac ban.

-Vay cd quan nao trong cd the chiing ta thifc hien

nhiem vu do?

-Vay theo cac em cd quan bai tiet nifdc tieu cd may

bo phan ?

Bifdc 2:Lam boc lo nhifng hieu biet ban dau cua HS

-Bay gid thay muon cac em ve ra giay nhhng dieu

em biet ve cd quan bai tiet nifdc tieu.Hoat dong nay

chung ta lam viec theo nhom 6 . Cac nhom cuf nhom

trifdng sau do cac to vien noi nhifng dieu minh biet

ve cd quan bai tiet nifdc tieu . Nhom trifdng tong

hdp y kien cua cac thanh vien bang each ve ra giay.

Bifdc 3: Be xuat cac cau hoi va phifdng an tim toi:

-GV yeu cau cac nhom neu cau hoi cho nhau de

-2 HS tra ldi

1

16’

-Sau khi uong nhieu nifdc mot luc

thi buon di tieu.

-HS gid tay.

-Cd quan bai tiet nifdc tieu.

-HS dif doan cd 3,4,5 bo phan.

-HS ve ra giay cac bo phan cua

cd quan bai tiet nifdc tieu.

-HS cac nhom dan ban ve vao

bang phu, GV phan loai va phan


rich ban ve co cung diem giong

xep thanh tring nhom rieng.

chat van.

-GV neu cau hoi de HS de xuat phriring an rim toi,

thi nghiem :

+Theo em lam the nao de chiing ta co the kiem tra

cri quan BTNT co 5 bo phan ?

+Theo em lam the nao de ta biet cri quan BTNT co

2 qua than. Ta rim hieu d dau ?

Bride 4 :Thric hien phriring an rim toi kham pha :

-HS xem tranh ve . -Cac nhom quan sat tranh ve va

thao luan cac cau hoi cf bride 3.

-5 bo phan : than trai, than phai,

ong dan nridc tieu, bong dai , ong

dai.

-GV hoi : Than co may bo phan ?

-Chung ta da driric trai nghiem dieu minh vufa rim

hieu bay gid cac em bo sung va hoan chinh lai hinh

ve ban dau cua cac em cho dung vdi tranh ve chung

ta vufa xem .Bride 5 : Ket luan, rut ra kien thric.

-HS hoan thien xong GV yeu cau cac nhom dan lai

len bang phu va chob lai:Cri quan bai tiet nridc tieu

gom hai qua than, hai ong dan nridc tieu, bong dai

va ong dai.

* Hoat dong 3: Thao luan nhom 6 vai tro va chric

nang cua cac bo phan trong cri quan bai tiet nridc

tieu.

- YC HS quan sat hinh, doc cac cau hoi va tra lcfi

cua cac ban trong hinh 2/23.

- Grii y cac cau hoi mdi:

+ Nridc tieu driric tao thanh d dau?

+ Trong nridc tieu co chat gi?

+ Nridc tieu driric dria xuong bong dai bang dricfng

nao?

+ Trridc khi thai ra ngoai, nridc tieu driric chria ddau?

- Ket luan: (SGK)

IV/ Cung co"- dan do:

-HS doc lai bai hoc

-Dan HS hoc bai.


-Dai dien nhom trinh bay ket

luan.

10’

-HS thao luan va tra ldi.

3’

* Iiut kitih nghiem:.


GIAO AN DAY THEO PHlTdNG PHAP BAN TAY NAN BOTLCfP 3C

Mon ;Tri nhien & xa hoi

TIET 40

Bai :THl/C VAT.A/ Muc tieu: Hoc xong bai nay HS co kha nang:

- Neu chide nhifng diem giong nhau va khac nhau cua cay col xung quanh.

- Nhan ra sif da dang cua thifc vat trong tif nhien.

- Ve va to mau mot so" cay.- KT nang tim kiem va xuf li thong tin: Phan rich, so sanh rim dac diem giong va khac nhau cua

cac loai cay.

- KT nang hdp tac: lam viec nhom de hoan thanh nhiem vu.

B/ Chuanbi:

* GV: Hinh trong SGK trang 76, 77.

*HS :SGK , VBT.



1/ On dinh Hat1

II/Bai cu : On ve xa hoi

-GV neu cau hoi:

+Noi ve dieu kien an, cf, ve sinh cua gia dinh em trifdc

kia va hien nay ?

+Noi ve dieu kien sinh hoat cua trifdng em trifdc kia va

hien nay ?

-Nhan xet - ghi diem.

III/Baimdi.

4’

-2 HS tra ldi.

-HS lang nghe.1 * Hoat dong1: Gidi thieu bai mdi

* Hoat dong 2 :HS quan sat va tim hieu sii giong nhau

va khac nhau cua cay col xung quanh.

Bride 1: Difa ra tinh huong xuat phat.

-GV cho HS lan lifdt ke ten mot so cay xung quanh

trifdng hoac mot so cay ma em biet.

-Cho HS quan sat cac loai cay co trong hinh trang 76,

77 SGK : neu ten va nhifng diem giong nhau va khac

nhau cua mot so loai cay do.

GV neu : Cac cay rat khac nhau da dang ve dac diem

ben ngoai nhif mau sac , hinh dang, kich thifdc...nhifng

cac cay co chung ve mat cau tao.Vay cau tao cua cay

gom nhifng bo phan chinh nao ?

Bride 2: Lam boc lo nhifng hieu biet ban dau cua HS

qua cac tranh anh ve cac loai cay .

17’

-HS ke.

-HS neu.

-HS nghe va suy nghi de chuan

bi tim toi kham pha.

-HS lam viec ca nhan thong qua

nhifng tranh anh ve cac loai cay-

ghi lai nhifng hieu biet cua minh

ve hinh dang kich thifdc, cac bo

phan cua mot so cayvao vd ghi


chep thi nghiem.

-HS lam viec theo nhom 4 :tong

hdp cac y kien ca nhan de dat

cau hoi theo nhom ve hinh dang

kich thifdc , cau tao cua mot so"loai cay.

-Dai dien nhom neu de xuat cau

hoi ve hinh dang , kich thifdc va

cau tao cua mot so cay.

Bifdc 3: De xuat cau hoi va phifdng phap tim toi.

-Cho HS lam viec theo nhom 4

-GV chot lai cac cau hoi cac nhom : nhom cac cau hoi

phu hdp vdi noi dung bai hoc:

+Xung quanh ta co nhieu cay hay it cay ?

+Hinh dang , kich thifdc cua mdi cay nhif the nao ?

+Mdi cay deu co nhbng bo phan nao ?

Bifdc 4 :Thifc hien phiftJng an tim toi kham pha.

-GV hifdng din , gdi y HS de xuat cac phifdng an tim

toi, kham pha de tim cau tra ldi cho cac cau hoi d bifdc -Cac nhom quan sat va thao luan

cac cau hoi d bifdc 3.3.

Bifdc 5 : Ket luan rut ra kien thifc.

-GV cho cac nhom lan lifdt trinh bay ket luan sau khi

quan sat, thao luan.

- GV nhan xet, chot lai.

=> Xung quanh ta co rat nhieu cay. Chung co kich

thifdc va hinh dang khac nhau. Mdi cay thifdng co re,

than, la, hoa va qua.

* Hoat dong 3: Lam viec ca nhan.

•Muc tieu: HS biet ve va to mau mot so" cay.

• Cc'ich tien hdnh.

Bifdc 1: Lam ca nhan.

- GV yeu cau HS lay giay va but chi ra de ve mot vai

cay ma cac em quan sat difdc.

- Lifu y: To mau, ghi chu ten cay va cac bo phan cua

cay tren hinh ve.

Bifdc 2: Trinh bay.

- Tufng ca nhan dan bai cua minh tnfdc ldp.

- GV mdi mot so" HS len tif gidi thieu ve bite tranh cua

minh.


luan .

-HS so sanh lai vdi hinh tifdng

ban dau xem thuf suy nghi cua

minh co dung khong ?10’

- GV nhan xet.IV/Cung co- dan do.2’

-Goi HS nhac lai noi dung bai hoc.

- Ve xem lai bai.

- Chuan bi bai sau: Than cay.


'Tiut kinli nghiem


GIAO AN DAY THEO PHlTdNG PHAP BAN TAY NAN BOTLCfP 3C

Mon ;Ttf nhien & xa hoi.

TIET 51

ML:TOM, CUA.A/ Muc tieu:

a) Kien tMc: -Chi va noi drfdc ten cac bo phan cd the cua cac con tom, cua drfcfc quan sat.b) Ky nans: -Neu va noi ldi ich cua tom va cua.c) Thai do: - Biet yeu thich dong vat.

B/Chuanbi:

* GV:- Hinh trong SGK trang 98 -99 .-Cac con tom ,cua.

* HS: SGK, vd.C/ Cac hoat dong day- hoc:


LQn dinh. Hat.1

3’ II/ Bai cu: Con trung.

+ Ke ten mot so" con trung co ich va mot so" con

trung co hai?

+ Neu mot so" each diet truf nhrfng con trung co hai?

- GV nhan xet.

Ill/ Bai mdi:

* Hoat dong 1: Gidi thieu bai

Trong gid trf nhien xa hoi horn nay co cung cac em

se tim hieu 2 loai dong vat so"ng difdi nifdc la tom ,

cua qua bai :Tom , cua.

*Hoat dong 2 :Tim hieu mot so" bo phan ben ngoai

cua tom, cua.

Bddc1:Difa ra tinh huo"ng xuat phat.

GV difa ra cau hoi gdi md :

-Ke ten mot so loai tom cua ma em biet?

-Nhan xet ve hinh dang va kich thifdc cua tom va

cua, chung cd giong nhau khong ?

-Ben ngoai cd the tom, cua cd gi bao ve ?

-2 HS tra ldi.

-HS lang nghe.1’

16’

-HS ke : tom hum, tom dong,cua

be, cua dong ...

-HS neu y kien ban dau cua minh

va ghi vao vd thrfc hanh nhrfng

hieu biet cua minh va nhung cau

hoi trf phat.

-HS nghe va suy nghl chuan bi tim

toi , kham pha.

GV neu : Tom, cua cd hinh dang , kich thrfdc khac

nhau nhrfng chung deu khong cd xrfcJng song.Vay bo

phan cua chung la gi ? Tom

khac nhau d nhrfng diem nao ?

Biftfc 2: Lam boc lo nhrfng hieu biet ban dau cua

HSqua vat thrfc hoac hinh ve tom, cua.

Biftfc 3 :De xuat cac cau hoi va phrfng an tim toi :

giong nhau vacua

-Hs lam viec ca nhan thong qua

vat thrfc hoac hinh ve ve tom, cua

va ghi lai nhrfng hieu biet cua

minh vao vd.-HS lam viec theo nhom 4: tong


hdp cac y kien ca nhan de dat cau

hoi theo nhom’

-GV cho HS lam viec theo nhom 4

-GV chot lai cac cau hoi cua cac nhom :nhom cac

cau hoi phu hdp vdi noi dung bai hoc :

+Hinh dang, kich thifdc cua tom va cua co giong

nhau khong ?

+ Ben ngoai cd the cua nhifng con tom , cua co gi

bao ve ? Ben trong cd the cua chiing co xifdng song

khong ?

+Cua cd bao nhieu chan, chan cua chung cd gi dac

biet ?

Bifdc 4 :Thifc hien phifdng an tim toi, kham pha ._GV hifdng din, gOi y HS de xuat cac phitOng an tim

toi, kham pha de timcau tra ldi cho cac cau hoi dbifdc 3.

Birtfc 5 :Ket luan, nit ra kien thtfc bai hoc.

-GV cho cac nhom lan lifdt trinh bay ket luan sau

khi quan sat, thao luan.

- GV nhan xet, chot lai:

=> Tom, cua cd hinh dang, kich thifdc khac nhifng

chung deu khong cd xifOng song. Cd the chung difOc

bao phu bang mot ldp vo cifng, cd nhieu chan va

chan phan thanh cac dot.

Hoat dong 3: Thao luan ca ldp.

• Muc tieu: Neu difdc ich ldi cua tom va cua.

• Cc'ich tien hanh

Bifdc 1: GV cho HS thao luan ca ldp.

- Cau hoi:

+ Tom, cua song d ddu?

+ Neu ich ldi cua tom, cua?

+ Gidi thieu ve hoat dong nudi, ddnh bat hay che

bieii tom, cua mb em bietl

-Dai dien cac nhom neu de xuat

cau hoi.

-Cac nhom quan sat va thao luan

cac cau hoi d bifdc 3 .


luan.

11’ *

-HS thao luan.

-HS trinh bay.

Bifdc 2:Yeu cau HS len trinh bay.

- GVnhan xet, chdh lai. Tom, cua la nhifng thifc an

cd nhieu chat dam can cho cd the con ngifdi.

Cl nifdc ta cd nhieu song, ho va bien la nhifng

moi trifdng thuan tien de nudi va danh bat tom, cua.

Hien nay, nghe nudi tom kha phat trien va tom da

trd thanh mot mat hang xuat khau cua nifdc ta.

IV/ Cung co"- dan do.3’

-HS doc phan bai hoc SGK.

- Chuan bi bai sau: Cd.

- Nhan xet bai hoc.


GIAO AN DAY THEO PHlTdNG PHAP BAN TAY NAN BOTLCfP 3B

Mon ;Ttf nhien & xa hoi.

Ml CATIET 52A/ Muc tieu:

a)Kien lhi(c: -Chi va noi difdc ten cac bo phan ccf the cua cac con ca difdc quan sat.b)Ky nans: -Neu ich ldi cua loai ca.c)Thdi do: -Biet yeu thich dong vat.

B/Chuanbi:

* GV: Hinh trong SGK trang 100, 101 .* HS : SGK,VBT.

C/ Cac hoat dong day - hoc:


I.On dinhr4’ II/ Bai cu: Tom , cua.

- Goi 2 HS :- Tom, cua la nhifng dong vat nhif the nao?

- Neu Ich ldi cua tom, cua?

- GVnhan xet.

III/Baimdi:

* Hoat dong 1: Gidi thieu bai.

* Hoat dong 2: Tim hieu mot so" bo phan ben ngoai

cua ca :

Bddc1: Difa ra tinh huo"ng xuat phat .GV difa ra cau hoi gdi mcf :

-Ke ten mot so" loai ca ma em biet ?

-Loai ca nao so"ng cf nifdc ngot ?

-Loai ca nao so"ng cf nifdc man?

-Nhan xet ve hinh dang va kich thifdc cua mot so loai

ca ?

-Ben ngoai ccf the cua ca co gi bao ve? Ben trong cua

chiing co xifcfng song khong?

Bddc 2 :Lam boc lo nhrfng hieu biet ban dau cua HS

qua vat thifc hoac hinh ve cac loai ca .

-2 HS tra ldi.

L

18’

HS ke : ca thu , ca chep, ca ro,

ca vang, ca map....

-HS neu y kien ban dau cua

minh va ghi vao vd thifc hanh

Nhifng hieu biet cua minh va

nhtfng cau hoi tif phat .

-HS lam viec ca nhan thong

Vat thifc hoac tranh anh mot so

loai ca-ghi lai nhifng hieu biet

cua minh ve cac bo phan ben

ngoai cua ca.

-HS lam viec theo nhom 6

:Tong hdp cac y kien ca nhan

de dat cau hoi theo nhom ve

cau taoben ngoai cua con ca.

Bifdc 3:Be xuat cac cau hoi va phifcfng an tim toi.

-GV cho HS lam viec theo nhom 6.

-GV chot lai cac cau hoi cua cac nhom : nhom cac

cau hoi phu hdp vdi no dung bai hoc:

-Ca la dong vat co xifcfng song khong ?

-Cac loai ca khac nhau thi hinh dang va kich thifdc

cua no nhif the" nao ?

-Ca song d dau ?_

- Dai dien cac nhom neu de

xuat cau hoi.


-Ca thd bang gi ?

-Ca bcfi bang gi ?

-Ben ngoai cd the cua chung difdc bao boc bdi mot

ldp gi ?

Bifdc 4 :Thdc hien phdcfng an tim toi kham pha .-GV hifdng din gOi y HS de xuat cac phdcfng an tim

toi, kham pha de tim cau tra ldi cho cac cau hoi dbifdc 3.

Bifdc 5 : Ket luan , rut ra kien thdc bai hoc .-GV cho cac nhom lan lddt trinh bay ket' luan sau khi

quan sat , thao luan.

- GV nhan xet, chot lai: Ca la dong vat co xifcfng

song, song difdi nifdc, thd bang mang. Cd the chiing

thifdng cd vay bao phu, cd vay.

-GV cho HS ve,to mau va ghi chu cac bo phan ben

ngoai cua con ca ma em thich .-GV hifdng din HS so sanh doi chieu .

* Hoat dong 3: Thao luan ca ldp.

Bifdc 1: Thao luan ca ldp.

+ Ke ten mot so cd d nude ngot vd nude man md em

biet?

+ Neu ich lai cua cd ?

+ Gidi thieu ve hoat dong nuoi, ddnh bat hay che bien

cd md em biet?

Bifdc 2:. GV nhan xet, chot lai:

=> Phln ldn cac loai ca dhdc suf dung lam thdc an.

Ca la thdc an ngon va bo, chda nhieu chat dam clncho cd the ngddi.

Cl nddc ta cd nhieu song, ho va bien do la nhdng

moi trddng thuan tien de nuoi trong va danh bat ca.

Hien nay, nghe nuoi ca kha phat trien va ca da trd

thanh mot mat hang xuat khau cua nddc ta.

IV/ Cung co - dan do.

-Doc lai noi dung bai.

- Ve xem lai bai.

- Chuan bi bai sau: Chim.

- Nhan xet bai hoc_

-Cac nhom quan sat tranh anh

cac loai ca va vat thdc va thao

luan cac cau hoi d bddc 3.


luan.

-HS ve.

-HS so sanh lai vdi hinh tddng

ban dlu xem thd suy nghl cua

minh cd dung khong?8’

3

*** Rut kinh nghiem:.


giáo án bàn tay nặn bột lớp 3 full httptext.123doc.orgdocument2472568...

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