Xây dựng bài giảng điện tử dạy học khái niệm hướng động (Sinh học 11)

X A Y DUN G BA I GIAN G Dl£ N T U

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D A Y HO C KHA I NIE M HUON G DON G (Sin h ho c 11 )

O HA TH| THUY*

Urng dyng CNTT vao giao dye Id mdt xu the

mdi cua nen gido dye Viet Nam trong giai

doan hien nay vd trong tuang lai.Viec ung

dyng CNTT nhieu ndm qua d cdc trudng ndi

chung vd trudng THPT Ngd Quyen ndi rieng da

cd budc tien bd quan trqng. Nhung ndm ddu

khi mdi trien khai dp dyng CNTT vdo dgy hoc

GV vdn cdn nhdm Idn hai khdi niem «bd/ gidng

dien ru" vdi «g/do dn dien ru". Bdi gidng dien

tu Id bdi gidng dugc the hien qua cdc phuang

tien CNTT (phdn mem, phdn cung). Nhung nhieu

GV nhdm Idn ggi ddy Id «gido dn dien tu". Trong

tieng Anh chi cd thudt ngu Lesson Plan (gido dn

hay ke hogch bdi gidng) vd Presentation (bdn

trinh chieu), khdng cd khdi niem E.Lesson. Do

dd, phdn the hien phuang phdp dgy hgc (PPDH)

trong gido dn cdn md nhgt dd xudt hien tinh

trqng lam dyng CNTT de thay the viec dgy hgc

tu dqc chep sang nhin chep. Hien nay, GV d

cdc bde hoc dd tung budc su dyng CNTT nhu

mdt phuang tien Idm tdng hieu qud gid hgc. De

ddp ung yeu cdu ddi mdi PPDH, qua bdi viet

ndy chung tdi gidi thieu viec ung dyng CNTT

vdo dgy hgc khdi niem hudng ddng - Bdi 23:

Hudng ddng - Sinh hgc 11.

Khi hgc xong bdi ndy yeu cdu HS: - Trinh

bdy dugc vai trd cua cdm ung ddi vdi sy tdn tgi

cua sinh vdt; - Neu dugc khdi niem hudng ddng,

vai trd cua hudng ddng; - Neu dugc ddc diem,

y nghTa cua 5 kieu hudng ddng (hudng sdng,

hudng nude, hudng hda, hudng trgng lyc,

hudng tiep xuc); - Ren luyen kT ndng quan sdt,

phdn tich, so sanh; - Biet cdch van dyng cdc

kien thuc ve hudng ddng vdo thyc tien sdn xudt;

- Yeu thich thien nhien, quan tdm den cdc hien

tugng cua sinh gidi; - Hinh thdnh quan diem

duy vdt - bien chung.

Ndi dung khdi niem vd cdc budc hinh thdnh

khdi niem cung vdi dnh ddng, dnh fmh, phim

dugc bo trf hgp li cy the tren cdc slide md chung

tdi dd thiet ke theo myc tieu bdi hgc, kem theo

nhieu hieu ung d custom animation. Bdi gidng

dugc chia thdnh 4 hogt ddng (HD) chinh: - HD

1: Hinh thdnh khdi niem cdm ung; - HD2: Hinh

thdnh khdi niem hudng ddng - dugc chia thdnh

3 hogt ddng thdnh phdn (HDTP); HDTP1: hinh

thdnh khdi niem hudng ddng; HDTP 2: phdn logi

hudng ddng; HDTP 3: hinh thdnh ca che vd

nguyen nhdn cua hudng ddng; HD 3: hinh thdnh

ndi dung cdc kieu hudng ddng; HD 4: cung cd

vd hodn thien kien thuc.

Cdc hogt ddng cua GV, HS vd cdc slide dugc

minh hga d bdng sau (xem bdng tr 50).

Nhu vdy, cdc sy vdt, hien tugng cua the gidi

sinh vdt dien ra trong ty nhien khdng cd gi Id

huyen bi md deu cd ca sd khoa hgc. Thdng qua

bdi hoc HS se nhdn thuc ve the gidi thyc vdt

chinh xdc han vd suy ngam de cd cdch tdc ddng

phu hgp vdi quy ludt ty nhien nhung dem Igi Igi

ich cho con ngudi.

***

Ung dyng CNTT vdo dgy hgc khdi niem

hudng ddng Id mdt yeu cdu can thiet ddp ung

viec ndng cao chdt lugng dgy vd hgc. Dgy hgc

bdng bdi gidng dien tu dd mang Igi sy say me

hung thu hgc tap cho HS. GV trd thdnh ngudi

cd van, trgng tdi khi len Idp. CNTT Id mdt phuong

tien dgy hgc tien ich. PPDH cd su dyng CNTT Id

mdt phuang phdp cdn khd mdi d trudng phd

thdng nhung dem Igi hieu qud rdt cao khi bdi

gidng dd dugc thiet ke mdt cdch cdng phu chinh

xdc ve ndi dung, dep ve giao dien. Tuy nhien,

de Idm dugc dieu ndy GV can cd kien thuc chuyen

* Truong THPT Ngo Quyen - Ba Vi • Ha Npi

Tap chi Giao due so 23 3 (k, i . 3 2010)