duang vd mat)
Phdn tich y nghla cda bdng
- Bdng tren khdng hodn todn liet ke mdt cdch chi tiet day du cdc kien thirc hpc sinh da hpc md chi mang tinh chat dinh hudng cho hpc sinh de tdi hien lai
nhung kiln thiic da bpc lien quan tdi chuyen de.
- Cung vdi bang tren, hpc sinh tilt kiem dugc thdi gian ghi chep tren lap, thuan tien cho viec nhin vdo dd de tu dn tap, tu kiem tra minh.
- Vdi cdch sdp xip trong bdng, gido vien rat de kiem tra ngay tren lap de phdt hien lo hdng kiln thiic todn hpc cua hpc sinh vd day cdc em bien phdp khde phuc. Tuy nhien cdn bilt rdng, lo hdng kien thirc cua hpc sinh se dupe
Idp ddn qua boat ddng gidi todn. Vi thi, dimg bao gid mdt nhieu thdi gian dn tap ly thuylt tren Idp ldm cho hpc sinh de sp, khdng nhd dupe vd gay cdm chdn ndn, mdt di ldng tu tin ciia minh. Can phdi bilt kien tri Idp lo hdng kiln thirc cho hoc sinh bdng nghe thuat lira chpn cdc bdi todn mang npi dung dien
hinh dl thdng qua viec giai nd, hpc sinh duge cung cd, khde sdu phdn kiln thiic bi hdng
Budc 3: He thong cac dang toan hinh hoc giai tich
B. Cdc dgng todn
Dgngl: Lap phuang trinh (dudng thdng, mat phdng, dudng trdn,elip,Hypebol,
Parabol, mat eau)
Dgng 2: Yeu eau tinh (tga dp cua mot dilm, khodng cdch giira hai dilm,
khodng cdch tir mot diem den dudng thdng, mat phdng, khodng cdch hai dudng thang cheo nhau, gdc giiia dudng vd mat, tich vd hudng, cd hudng ciia cdc vee ta, dien tieh hoac the tieh ciia mot hinh ndo dd...
f
Dang 3: Mdt sd bdi todn chiing minh
1 •> f
- Chiing minh dudng thdng, mat phang vudng gdc, song song, cat nhau
t t r t I
- Chiimg minh dudng thdng di qua diem ed dinh, thupc mat phdng cd dinh
- Chiing minh mat phdng ed djnh, bode chira dudng thdng ed dinh
Dang 4: Tim dieu kien de cdc hinh hinh hpc thda man tinh chdt ndo dd
Viec he thong cdc dang de thi giup cho bpc sinh cd cdch nhin tdng quan
vl cdc dang todn can dn tap vd suy nghT ve phuong phdp giai cho timg dang.
Day ciing Id mdt dinh hudng cho cdc em tu kiem tim cdc bdi todn, cdc de thi d
timg dang ndi tren dl tu dn tap trude khi gido vien luyen theo timg dang.
Budc 5. GV cho hoc sinh thuc hanh luyen tap theo cac dang toan