» * V TRONG DAY HOC GIAI BAI TAP HINH HOC 11 O OO THI H C N G MINH* Myc ti§u cua ddi mdi phuong phdp dqy hqc khdi qudt hod; suy ngugc (tiln ngugc, lul ngugc) (PPDH) hi^n nay Id phdt huy dugc Hnh tich[.]
» * V TRONG DAY HOC GIAI BAI TAP HINH HOC 11 O M yc ti§u cua ddi mdi phuong phdp dqy hqc (PPDH) hi^n Id phdt huy dugc Hnh tich eye, ehu ddng, sdng tqo, r6n luy^n cho hqc sinh (HS) khd ndng h/ hgc, h; khdm phd PPDH Phdt hiin vd gidl quyit vd'n di (PHVGQVD) Id mdt nhung PPDH tich eye, tqo dugc sy say me, thu hqc tdp cho HS Bdi vilt trinh bdy v l vi§c vdn dyng PPDH PHVGQVD dqy hqe gidl mdt so' bdi tdp mdn Hlnh hgc Idp 11 PPDH phdt hign vd gidl quyi't vd'n d l 1) Tinh hudng ggi VD Theo Nguyin Bd Kim ( ; tr 187), finh hud'ng ggi VO Id ggi cho HS nhi/ng khd khdn v l mdt li ludn hodc thye Hen md HS ed t h i vugt quo vdi khd ndng euo mlnh, nhung khdng phdi Id tuc khde md nhd mdt sd' quy tdc ed tinh chd't thudt todn, mdt qud trinh tich eye suy nghT, hoqt ddng di bien ddi dd'i tugng hodc dilu chinh tri thuc dd ed Tinh hud'ng ggi VO cdn thda mdn cdc d i l u kiSn sou: tdn tgi VD, ggi nhu cdu nhdn thuc, gdy niim tin d khd ndng gidi quyit VD 2) Cdc budc thuc hien dpy hpc PHV GQVD Cung theo NguySn Bd Kim (1, K.l 92195), hgt nhdn cua PPDH PHVGQVD Id sy dilu khien cua gido vien (GV) qud trinh td chuc dgy hqc nhdm giup HS nghien cuu vd GQVO Qud Kinh ndy cd t h i chia tSdnh budc nhu sou: Budc I: PH hope thdm nhdp VD: • Tu mdt finh hud'ng ggi VO GV tqo ra, HS cd t h i lien tudng d i n nhilu cdch suy nghT, fim tdi, du dodn d l dua ro cdc hudng GQVO; GV gidl thich vd chinh xdc hda finh hudng nhdm giup HS hieu dung VO ddt ro; - HS phdt bilu VO vd ddt myc tieu GQVO dd Budc 2: Tim gidi phdp GQVD: - Khi phdn tich VO, HS edn Idm sdng td mdi lien he giOa y l u to dd bilt vd y l u td phdi fim; Khi de xud't vd thye hien hudng GQVD, ngudi hoc thudng su dyng cdc thao tdc tu nhu: ddc biet hod, h/ong h/, # OO THI H C N G MINH* khdi qudt hod; suy ngugc (tiln ngugc, lul ngugc) vd suy xudi Phuong liudng dugc d l xud't di GQVD nlu thd'y khdng phu hgp thi cd t h i phdi dilu chinh, thdm ehi bde bd vd chuyin sang hudng khde edn thilt Khdu ndy ed t h i Idm nhilu Idn cho d i n fim ro hudng di dung; Sou fim dugc mdt gidi phdp d l GQVO, GV cd t h i hudng ddn HS filp Kie fim them nhCrng gidl phdp khdc de lya chqn ro gidi phdp hgp li nhd't Budc 3: Trinh bdy gidi phdp Khi dd fim dugc gidl phdp di GQVO ddt ra, ngudi hgc phdi Kinh bdy Iqi todn bd Idi gidi, tu viec phdt bilu VO cho tdi each GQVD Trong trinh bdy, edn hjdn thu cdc quy djnh nhu: ghi rd gid thilt, ket ludn ddl vdi ede bdi todn chung minh; phdn biet rd cdc phdn: phdn tich, cdch dyng, chung mlnh, bien ludn dd'i vdl bdi todn dyng hinh; giCr gin vd sqch, chu dep, Budc 4: Nghien cuu sdu gidi phdp: - Tim hilu nhCmg ung dyng cua ket qud mdi fim duqc; - Oe xud't nhCmg VO mdi cd lien quan nhd cdc phep Krong h/, khdi qudt hod, Igt ngugc VD, vd gidl qu)