SKKN vật lý KHỐI lớp 11 xây dựng và tổ chức dạy học phát triển năng lực học sinh trong chuyên đề “từ trường” vật lí 11 trung học phổ thông

SO GD & DT viNH PHUC TRUONGTHPTTRANPHU -ro,,��ro,,� - BAo cAo KET QUA NGHIEN CUU, UNG DVNG SA.NG KIEN Ten sang kiSn: ., XAYDl}NGVATOCHUCD�YHQCPHA.TTRIENNANGLV C SINH TRONG CHUYEI\" A HOC DE "TU TRUOI\"G" - A VAT Li 11 THPT � � � � Tac gia sang kiSn: ThS DAO THI HA Mon: V�tLi Ma sang kiSn: 02.54 Vinh Phuc, nam 2020 SangKienK.inh".1ghiem.or g ., A A BAo cAo KET QUA NGHIEN CUU, UNG Dl)NG SA.NG KIEN Loi thi�u gioi DS hoan "ChiSn hroc phat triSn giao due 2011 - 2020" Thu nrong Chinh phu phe duyet nam 2012, voi muc tieu tf>ng quat dSn nam 2020, nSn giao due mroc ta duoc df>i mm can ban va toan dien theo hirong chu�n hoa, hien dai hoa, xa h9i hoa, dan chu h6a va h9i nhap quoc ts, chfit hrong giao due duoc nang cao mot each toan dien DS thuc hien chi thi sf>: 2919/CT-BGDDT vs nhiem vu chu ySu cua nam hoc 2018 - 2019 cua nganh giao due voi phuong huong, nhiem V1,1 va giai phap chu ySu, co neu ro: giao due phf> thong tiSp we chu�n bi cac diSu kien dS thuc hien chuong trinh, sach giao khoa moi, nang cao chfit hrong kiSm tra, danh gia kSt qua hoc t�p, ren luyen, dac biet la ky thi trung hoc phf> thong quf>c gia, nang cao chfit hrong dao tao Va nghien ciru khoa hQC, tang cuong hQi nhap quoc tS va yeu c�u cua CUQC each mang cong nghiep 4.0, tang cirong giao due tu nrong, dao due, lf>i song, ky nang song, van h6a ung XU' nha tnrong, xay dung moi tnrong giao due an toan, lanh manh, than thien, phong chong bao lire hoc duong hieu qua DS thuc hien diroc nhirng diSu tren c§n phai df>i mm PPDH, chi c6 df>i moi can ban PPDH moi c6 thS tao duoc sir df>i moi that sir GD nhim dao tao dtroc lap nguoi nang dong, sang tao, c6 tiSm nang canh tranh tri tu� bf>i canh cua CUQC each mang cong nghe 4.0 bung nf> M9t nhfrng n9i dung quan cua viec df>i moi PPDH la df>i moi va da dang hoa cac hinh thirc tf> clnrc hoat dong hoc t�p cua hoc sinh, khong thS thiSu day hoc theo huong phat triSn nang hrc hoc sinh chuyen dS re chirc day hoc day hoc theo huong phat triSn nang lire chuyen dS se tao CO' h9i va diSu ki�n dS HS lam vi�c m9t each tµ giac, tich Cl,fC, biSt lien kSt, m6c nf>i kiSn thuc cac mon hc;>c, cac ph�n tung mon l?i v6i nhau, tu d6 HS se tµ tin ma giai quySt tf>t cac tinh huf>ng ngoai thµc tiSn CUQC sf>ng Can cu cong van sf>: 5555/BGDDT-GDTrH ban hanh 08 thang 10 nam 2014 chi ro m9t nhfrng n9i dung sinh ho?t tf>/nh6m chuyen mon vS df>i mai phuong phap d?y h9c va kiSm tra danh gia la xay dµng chuyen dS d?y hc;>c Thay cho vi�c d?y hc;>c dang duqc thµc hi�n theo tung bai/tiSt sach giao khoa nhu hi�n bing vi�c lµa ch9n n9i dung dS xay dµng cac chuyen dS day hoc phu hop voi viec sir dung phuong phap day hoc tich cue diSu kien thirc tS cua nha tnrong Tren CO' s& soat chuan kiSn thirc, ki nang, thai d9 theo chuong trinh hien hanh toi nhan thay: Chuong trinh V?t Ii 11 THPT hien nay, kiSn thirc chuong tu tnrong phu hop voi viec xay dung chuyen dS Tu truong day ciing la mach kiSn thirc dS C?P toi nhfrng v�n dS c6 tinh lien mon, irng dung vao thirc tiSn CUQC song, mang tinh C?P nhat, "n6ng" xa h9i loai nguoi hien nay, df>ng thoi cung goi mo d@ hoc sinh co th@ tu lire tim hieu, nghien CU'U duoi sir dinh huong CUa giao Vien Chuyen dS Tu truong ciing diroc mot sf> giao vien xay dung va tf> chirc thirc hien, nhung da ph�n moi su dung vao chuyen dS, it c6 phdn luyen t?p tf>ng kSt cho ca chuyen d( tf> clnrc nang vs viec hinh kiSn thirc, chua barn sat ki thuat day hoc, thiSt kS bai hoc theo cong van sf>: 5555/BGDDT- GDTrH ban hanh 08 thang l O nam 2014, d�c biet chira chu phat triSn nang lire HS, nh�t la nang hrc img dung cong nghe thong tin va truyen thong, bit kip yeu c�u moi cua thoi dai sf> 4.0 Voi li tren toi da chon dS tai 'Xily dung niing lu«: hoc sinh chuyen THPT" Ten ki�n i/J va ta chtec d{Jy hoc phiit triJn 'Tic tneong - V{J,t li 11 sang "Xdy dung va t6 chuc day hoc phat trien nang luc hoc sinh chuyen ad 'Tic trutrng - Vgt li 11 THPT" Linh ki�n V\fC ap dung sang Sang kiSn "Xdy dung va td chuc day hoc phat trien niing luc hoc sinh chuyen ad Tic truirng - V{J,t li 11 THPT" thuoc linh vuc li luan phuong phap day hQC V?t li nen dUQ'C ap dung chinh li luan day hQC V?t li noi rieng va c6 th@ lam CO' n6i sa dS ap dung li luan day hoc cac mon hc khac chung Khi V?n d1,mg sang kiSn vao d?y hc V?t li 11 chuong trinh chufin n6i rieng va b9 mon V?t 1i n6i chung da giai quySt duqc cac v�n dS nhu: + Dap ung dung chu truong, duong lf>i, quan diSm chi d?O cua b9 GD&DT vs df>i mm d?y hc, chufin bi tiSn dS tf>t cho cho cong CUQC cai each, thay SGK sip t6i cua b9 GD&DT + vs phia nha truong T?O duqc moi truong hc t?p than thi�n, HS tich eve, tang cuong giao d1=1c tu tuang, d?O due, lf>i sf>ng, ky nang sf>ng, van h6a ung XU nha truong, xay dung moi tnrong giao due an toan, lanh manh, than thien, phong chong bao lire hoc dirong hieu qua Tang cuong hoat dong giao hru, sinh heat tf> nhom chuyen mon nha tnrong, giira cac tnrong voi nhau, g6p phan nang cao ch�t hrong giao due cua tung nha tnrong va ca nSn giao due mroc nha + vs phia giao vien Giao vien xay dung duoc chuyen dS day hoc theo mach logic kiSn thirc va tf> chirc day hoc phat triSn nang hrc hoc sinh theo chuyen dS thay cho viec tf> chirc day hoc theo bai don le truyen thong, qua giao vien co ca h9i tim hieu, ren luyen ki thuat xay dung chuyen dS day hoc, ren luyen phuong phap tf> chirc day hoc moi, gop phan lam tiSn dS t6t chu§n bi cho cong thay CUQC cai each SGK sip toi cua b9 GD Giao vien co ca h9i nang cao trinh d9 cong nghe thong tin thong qua viec tim hiSu va huong d�n hoc sinh cai d?t thiSt bi, phan mSm irng dung cong nghe 4.o chuyen dS day hoc phat triSn nang lire hoc sinh + VS phia hoc sinh Hoc sinh hinh va phat triSn cac nang lire phat hien va giai quyet v�n dS (co tinh lien men, tinh tlnrc tiSn, tinh sang tao), nang hrc thu nhan va XU li thong tin, nang lire tinh toan, tu duy, ngon ngir, giao tiep, nang hrc nghien CU'U khoa hoc, nang hrc tu hoc, hop tac, dac biet nang lire irng dung cong nghe thong tin thoi dai sf> 4.0 qua d6 hinh nhirng pham ch�t cong dan cua thoi dai cong nghe 4.0 Hoc sinh biSt each van dung kiSn tlnrc dS giai quyet cac tinh huong khac gap phai CUQC song, biSt each bao ve tinh mang cua ban than va nhirng nguoi xung quanh, qua tang cirong triSn k9 nang song, gop phan phat tri rue, cam xuc Ngay sang ki�n dU'Q'C ap dung l�n d�u Sang kiSn duoc toi ap dung thir nghi�m l§n d�u tien vao thang nam 2019, dSn toi da thu nghi�m, ap d1;1ng Mo ta ban ch�t cua sang ki�n 5.1 D�T VAN DE 5.1.1 MtJC dich nghien CU'U sang ki�n "Xay d1p1g va t6 chuc dqy h9c phat tridn nang ltfC h9c sinh chuyen ad 'Tic tririrng - Vgt li 11 THPT" nh�m hinh va phat triSn cac nang lire cua HS: nang lire phat hien va giai quyet vfin dS (c6 tinh lien men, tinh thirc tiSn, sang tao), nang lire thu nhan va XU Ii thong tin, nang lire tinh toan, tu duy, ngon ngir, giao tiep, nang lire nr hQC, hop tac, nang hrc nghien ciru khoa hQC (qua day hQC dinh hirong STEM), dac biet nang hrc irng dung cong nghe thong tin thoi dai s6 4.0 qua d6 hinh duoc nhfrng pham chfit cong dan CUa thoi dai cong nghe 4.0 => gop phan nang cao chfit hrong day hQC CUa HS kh6i 11 n6i rieng va cac lop THPT n6i chung 5.1.2 1>6i nrong ciru DBi tutrng Va khach th� nghien nghien CU"U Cac bien phap xay dung chuyen dS ba dinh lu�t Niu Ton theo huong phat triSn nang hrc HS dS tf> chirc day hQC chuyen dS Cac bien phap t6 clnrc day hQC theo hirong phat triSn nang lire HS chuyen dS "Tie trutrng - Vg,t li 11 THPT" dS hinh va phat triSn cac nang lire cho HS Khtich thJ nghien CU"U H9c sinh lop l lA - tnrong THPT Tdn Phu - Vinh Yen - Vinh Phuc va HS lop l lE - tnrong THPT Tdn Phu - Vinh Yen - Vinh Phuc 5.1.3 Gia thuyet khoa hoc NSu xac dinh t6t cac bien phap xay dung chuyen dS ba Dinh Luat Niu Tan theo hirong phat triSn nang lire HS, va xac dinh t6t cac bien phap tf> chirc day hQC theo hirong phat triSn nang hrc HS, chuyen dS Tie trutrng - Vg,t li 11 THPT" se hinh va phat triSn diroc cac nang lire cua HS Cac nang lire la: nang lire phat hien va giai quyet vfin dS (co tinh lien men, tinh thuc tiSn, tinh sang tao), nang hrc thu nhan va XU Ii thong tin, nang hrc tinh toan, tu duy, ngon ngir, giao tiSp, nang hrc nghien ciru khoa hQC, nang hrc tu hoc, hop tac, dac biet nang lire irng dung cong nghe thong tin qua d6 hinh duoc nhirng pham chfit cong dan cua thoi dai cong nghe 4.0 => g6p phdn nang cao ch�t hrong hoc cua HS THPT 5.1.4 Pham vi nghien ciru - Thai gian thuc hien: tu hQC ki nam hQC 2018 - 2019 dSn ki nam hQC 2018 - 2019 - BiSu tra va thi,rc nghi�m t?i hai lop 11 A va l lE tm&ng THPT Trfin Phu - VInh Yen - Vinh Phuc h9c ki nam 2019) 5.1.5 CU'll PhU'O'ng phap nghien s Sir dung phoi hop cac phuong phap nghien ciru sau - Phuong phap nghien ciru li thuyet - Phuong phap diSu tra, quan sat SU pham + Sir dung phieu diSu tra, danh gia dS tim hiSu tinh hinh cua HS tnroc va sau thirc hien dS tai + Tnrc tiSp giang day, kiSm tra kSt qua, danh gia viec ren nang hrc cua HS + Quan sat sir pham dS kiSm cac biSu hien vS mot sf> nang lire c�n hinh va phat triSn cho HS qua trinh day hoc - Phuong phap thuc nghiem sir pham + Ph6i hop voi mot sf> GV THPT c6 kinh nghiem, thong nh�t n9i dung, phuong phap, h� thong cau hoi, tinh huong (lien mon, trng dung thuc tiSn) dua vao qua trinh DH tnrong THPT -Vinh Phuc a + Lap TN va DC duoc chon co trinh dQ nrong duong, dira tren kSt qua hoc tap tnroc Cac lap TN va DC diroc bf> tri nhu sau: Chon lap: lap DC, l lap TN + Lap DC t6 chirc day hoc theo bai don le, theo phan ph6i chuong trinh va theo huong d�n cua SGK, SGV hien hanh + Lap TN duoc t6 chirc day hoc theo cac bien phap day hoc phat triSn nang hrc HS, chuyen dS Tie truong - V{it li 11 THPT" dira tren cac bien phap xay dung chuyen dS ba dinh lu�t Niu Ton theo huong phat triSn nang lire HS - Phuong phap XU li sf> lieu + Phan tich, danh gia dinh hrong qua cac phieu danh gia cua HS (danh gia ca nhan, danh gia theo nh6m) + Phan tich, danh gia dinh hrong cac bai kiSm tra + Lap bang thong ke cho ca nhom lap DC va TN - Phan tich, danh gia dinh tinh + vs nang hrc tu hoc, sang tao, phat hien va giai quyet v�n dS co tinh lien mon, tinh thuc tiSn, tinh sang tao + vs nang lire hop tac (giira cac vien nhom, giira cac nh6m) + VS nang lire nghien ciru khoa hoc + vs nang lire irng dung cong nghe thong tin va truyen thong + vs phia HS tfit ca cac em da tung nhan nhiem vu nghien ciru bai hQC, triSn khai, giai quyet nhiem vu hQC tjp (ca nhan hO?C theo nhom) nr GV dS tu tim toi, kham pha tri tlnrc moi nlnrng co toi 60% s6 HS chi thinh thoang tham gia, co toi 30% s6 HS hiSm tham gia => clnrng to viec day hQC dinh huong nang hrc ren nang hrc co duoc triSn khai nlnrng voi tfin sufit dt thap, vi vay viec hinh phat triSn cac nang lire CO' ban nlnr: nang hrc phat hien va giai quyet vfin dS, nang hrc thu nhan va XU Ii thong tin, tu duy, ngon ngfr, hop tac rfit han chS C6 toi 98% HS da tung SU dung cac phan mSm tin hQC irng dung tren may tinh hoac tren dien thoai dS phuc vu cho viec nghien ciru, tim hiSu va van dung kiSn thirc b9 mon vat Ii nhien da phan chi dung & viec SU dung phan mSm Word 2013, PowerPoint 2013, cac phfin mSm truy c�p mang C6c c6c, Chrome chira tung cai d?t cac phan mSm dac tnrng cho mon sinh hoc Tfin sufit sir dung cac phan mSm tin hoc phuc vu mon v�t Ii dt thap: chi co 27% HS thirong xuyen tham gia, da phan HS tham gia voi tfin sufit thap, ca biet co toi 2% HS chira tung tham gia => Chung to ki nang cong nghe thong tin phuc vu cho b9 mon v�t li cua HS th§p (mac du d6i nrong HS da phan la HS pho, cac em dSu tiSp can voi may tinh va cac thiSt bi dien thoai thong minh) M9t h� qua tfit ySu la cac em l� thuoc nhiSu vao thfiy/co, nang lire tu hQC thap, thS hien co toi 45% s6 HS khong thS nr hQC nhirng bai SGK ma khong co thfiy/co giang day va huong d§n, 52% s6 HS chi tu hQC diroc nhfrng phan don gian, mot s6 khiem t6n la 3% s6 HS co thS nr hQC nhfrng bai SGK ma khong co thfiy/co giang day va hirong d§n 5.3 KET QUA NGHIEN ctru 5.3.1 Cac binrc thtrc hi�n d� tai 5.3.1.1 Thi�t k� nghien Ctru ChQn hai l&p llE Nh6m llA va Kiem tra tru&c tac d9ng Tac d9ng KiSm tra sau tac d9ng TN 01 T5 chuc d?y hQC theo 03 cac bi�n phap d?y hQC phat trien nang h,rc HS chuyen dS Tit: truirng - VQ,t Ii 11 THPT" tren cac bi�n phap xay dl,l'Ilg 12 chuyen dS theo hu&ng phat triSn nang lire HS DC 02 Day hoc theo huong d�n cua 04 SGK va SGV Tnroc tac dong, toi sir dung bai kiSm tra thoi gian 15 phut voi n9i dung nhu sau: DEKIEMTRA Mon: V�t Ii 11 (Thoi gian lam bai 15 phut, khong k� thot gian phat d�) Em hay khoanh tron vao phuong an tra loi em cho la dung nh�t Cau Phuong cua hrc nr tac dung len day d§n mang dong di�n khong c6 d�c diSm nao sau day? A Vuong g6c voi day d§n mang dong dien; B Vuong g6c voi vecto cam (mg nr' C Vuong g6c voi mat phang chira vecto cam irng tu va dong di� D Song song voi cac duong sue tu Cau 2:M9t day d§n mang dong di�n c6 chiSu tu trai sang phai nim mot tu tnrong c6 chiSu tu duoi len thi lire tu c6 chiSu A tu trai sang phai B tu tren xuong duoi, C tu ngoai D tu ngoai vao Cau 3:M9t day d§n mang dong di�n duoc b6 tri theo phuong n�m ngang, c6 chiSu tu ngoai NSu day d�n chiu lire tu tac dung len day c6 chiSu tu tren xuong duoi thi cam irng tu co chiSu A tu phai sang trai B tu trai sang phai C tu tren xuong duoi D tu duoi len tren Cau 4:NSu lire tu tac dung len doan day d�n mang dong dien tang l�n thi d9 Ion cam irng tu A v§n khong d6i B tang l�n C tang l�n D giam lfin Cau 5:Khi d9 Ion cam irng tu va cirong d9 dong dien qua day d�n tang lfin thi d9 Ion hrc tu tac dung len day d�n A tang lfin B khong d&i C tang lfin.' D giam lfin Cau 6:M9t doan day d§n dai 1,5 m mang dong dien 10 A, d�t vuong g6c mot tu tnrong dSu c6 dQ Ion cam irng tu 1,2 T N6 chiu mot lire tu tac dung la A 18 N B 1,8 N C 1800 N D N Cau 7:D�t mot doan day d§n thing dai 120 cm song song voi tu tnrong dSu c6 d9 Ion cam irng tu 0,8 T Dong di�n day d§n la 20 A thi lire tu c6 d9 Ion la 13 A 19,2 N B 1920 N C 1,92 N D.ON Cau 8:Cam irng tu sinh boi dong dien chay day d�n thing dai khong c6 d�c diSm nao sau day? A Vuong g6c voi day d�n; B Ti l� thuan voi cuong d9 dong dien C Ti l� nghich voi khoang each tu diSm dang xet dSn day d�n; D Ti l� thuan voi chiSu dai day d�n Cau 9:Cho day d�n thing dai mang dong dien Khi diSm ta xet g�n day hon l§n va cuong d9 dong dien tang l§n thi d9 Ian cam irng tu A tang l§n B tang l§n C khong df>i D giam l�n Cau lO:D9 Ian cam irng tu tai tam vong day d�n tron mang dong di�n khong phu thuoc A ban kinh tiSt dien day day B ban kinh vong day C cuong d9 dong dien chay day D moi tnrong xung quanh Dap an d� ki�m tra trU'O'C tac d(>ng KSt qua kiSm tra cua hai nh6m c6 sir khac biet 6.54 Toi SU dung phep kiSm clnrng T- test d9c l�p dS kiSm chirng sir chenh lech vS diSm sf> trung binh cua nh6m tnroc tac dong Nhtr vay, hai nh6m diroc coi la tuong duong 5.3.1.2 T& clnrc thi�t k� chuyen d� "Tir truong" theo dinh huong phat tri�n nang hrc HS Quy trinh xay dung chuyen dS va c�u true trinh bay chuyen dS duoc toi thiSt kS barn sat tai lieu t�p hu�n: "Xay dung cac chuyen dS day hoc va kiSm tra danh gia theo dinh hirong phat triSn nang hrc hoc sinh" cua bt;> GD&DT xu�t ban thang 12/2014 (trang 25 dSn trang 34) va Tai lieu t�p hu�n: "Sinh heat chuyen mon phuong phap va ky thuat tf> clnrc hoat dong nr hoc cua hoc sinh trung hoc phf> thong" cua b9 GD&DT xu�t ban thang 12/2017 vs KSt qua toi thiSt kS duoc chuyen dS Tu: truong nhu sau: Ten chuyen d�: " TU TRUONG " Chuong trinh V�t Ii 11 THPT - thoi hrong day tren lop ti�t I NQI DUNG CHUYEN DE CHUYEN DE TU TRUONG 14 I M1;lC tieu bai hQC Ki�n tlnrc: + Trinh bay duoc tu tnrong c6 a dau? + Trinh bay duoc tac dung cua tu tnrong, neu duoc tu tnrong cua dong cac tnrong hop d?C biet + Van dung quy tic nim ban tay phai dS xac dinh chiSu cua dirong cam irng tu CUa dong dien cac mach CO dang dac biet + Van dung quy de bay tay trai dS xac dinh hrc tu tac dung len dong dien Ki nang + Van dung quy denim ban tay phai dS xac dinh chiSu cua dirong cam irng tu CUa dong dien cac mach CO dang dac biet + Van dung kiSn thirc da hoc dS nhan biSt a dau c6 tu tnrong + Van dung quy tic bay tay trai dS xac dinh hrc tu tac dung len dong dien + Tu thiSt kS thi nghiem dS xac dinh tu tnrong, Thai d(> Ren thai d9 cham chi, trung thuc, trach nhiem, tich cue tun hieu, hoc tap.nr lire nghien ciru cac v§n dS moi khoa hoc Nang hrc dinh hmrng hinh va phat tri�n chi hQC sinh + Nang 11,l'C tu hoc, giao tiSp va hop tac nhom + Nang 11,l'C phat hien va giai quyet v§n dS va sang t;,10 thong qua bai hoc + Nang 11,l'C tinh toan, giai bai tjp vat li + Nang 11,l'C van dung kiSn tlnrc vat li vao CUQC sf>ng + Nang 11,l'C ngon ngir, trinh bay va trao d6i thong tin, nang hrc cong nghe thong tin, th�m mi, ren thS 11,l'C tf>t II ChuAn bf Giao vien + Bai SO?n, may tinh, may chiSu + Thi nghiem vS tu tnrong + Tranh anh va video phuc V1=l bai giang, + H� thong bai t?p vS chu dS H9c sinh + Sach giao khoa + v& ghi, gi§y nhap + Cac kiSn thirc vs 11,l'C tac dung III T& chirc hoat d(>ng hQC cua hQC sinh Huong din chung Tu viec yeu c�u hoc sinh quan sat (qua video) mo ta tu tnrong cua nam cham va dong dien 15 Hoc sinh c6 thS suy luan nguyen nhan vi hai nam cham , hai dong di�n hay nam cham va dong dien nrong tac voi Tren ca sa xac dinh nguyen nhan hai nam cham , hai dong di�n hay nam cham va dong dien tuong tac voi dS hinh khai niem tu tnrong Tu viec quan sat cac hien nrong tlnrc tS hinh khai niem hrc tu M6i n9i dung duoc thiSt kS gom: Khoi dong - Hinh kiSn thirc Luyen tap Ph�n van dung va tim toi rong duoc GV giao cho HS vS nha tim hiSu C6 thS mo ta chu6i hoat dong hoc va du kiSn thoi gian nhir sau: ma Cac bU'O'C Ho �t d9ng Ho�t dong l Ten hoat d9ng Thcri IU'Q'ng di}:' kien tuong tac 10 phut Tao tinh huong c6 vfin dSnam cham giira hai Tim hiSu khai niem tu tnrong Ho�t dong 35 phut Tim hiSu lire tu, cam irng tu Hinh Ho�t dong 45 phut kiSn thirc Tim hiSu vs tu tnrong cua dong dien 90 phut Hoat dong c6 dang dac biet Tim hiSu vS lire lorenx Ho�t dong 45 phut Khoi d9ng H� thong h6a kiSn thirc, dung kiSn 90 phut tlnrc 1i thuyet giai thich cac hien nrong thuc ts va giai bai t?p vs tu tnrong Huang d§n vS nha lam cac bai t�p vS 60 V?n dung Ho�t dong phut va tim toi Tu tnrong rong Tim hiSu nhung ung dung cua tu tnrong Luyen t?p Ho�t dong ma HU'6'ng din chung cu th� tirng hoat d9ng BUOC KHOO D(>NG HD 1: Tao tinh huong hoc t?p vS nrong tac tu a Muc tieu hoat d9ng: Thong qua video dS dinh huong HS giai thich duoc tai hai nam cham, hai dong dien ,nam cham voi dong dien lai nrong tac duoc voi b GQ'i y t& chirc hoat d9ng: - Gv d�t vfin dS bing each cho HS xem video mo phong r6i yeu c�u HS bing hiSu biSt cua minh dS giai thich hien nrong tren, 16 Hs nhan nhiem vu chuyen giao, thao luan nhom, dira y kiSn cua minh va ghi nhan y kiSn cua cac ban khac Gv ghi nhan y kiSn cua HS va dinh huong HS dS ngo cau tra loi Sau hoc xong bai hoc dS tim cau tra Im d�y du c San ph�m hoat d(>ng: Hoat dong nhom rf>i dira y kiSn BUOC HINH THANH KIEN THUC HD Tim hi�u mdi truong xung quanh nam cham, xung quanh dong di�n a MlJC tieu hoat d(>ng: Tim hiSu vi deo TN nr giai thich cac hien nrong thirc tien - N9i dung: + TN nr tnrong cua nam cham + Dinh nghia vS nr tnrong, duong sue nr + Dung khai niem nr tnrong giai thich hien nrong cac nam cham nrong voi b GQi y t6 chirc hoat d(>ng: + GV d�t v�n dS bing each thong qua TN va doc SGK dS thirc hien nhiem vu hoc tjp + HS nhan nhiem V1,l chuyen giao cua GV, ghi v& y kiSn cua minh va cua cac vien nhom Thao luau nhom dS dira bao cao vs nhfrng du doan + Trong qua trinh HS hoat dong nhom, GV quan sat HS nr hoc, thao luan , tro giup kip thoi cac em c�n h6 tro Ghi nhan kSt qua cua cac nhom HS c San ph�m hoat d(>ng: Bao cao hoat dong nhom va noi dung ghi v& HS + N9i dung nr tnrong + Duong sue nr va tinh ch�t cua dirong sue tu HD 3: Tim hi�u L\f'C tir, cam img tir a MlJC tieu hoat d(>ng: Tim hiSu hrc tu va khai niem cam irng tu N9i dung: + Luc tu tac dung len day d§n mang dong dien F = Bilsina, quy tic ban tay trai, - -+ -+ -+ -+ Hop lire Fht = F1 + F2 + F3 + + Fn + Phuong phap chiSu vec ta dS dira vs d9 Ion + Cam irng tu: B = F/Ilsina b GQi y t6 chirc hoat d(>ng: - Gv d�t v�n dS bing viec thong qua video dS cac em thirc hien nhiem vu hoc t?p 17 + HS nhan nhiem vu chuyen giao cua GV, ghi VO y kiSn cua minh vacua cac vien nh6m Thao luan nh6m dS dira bao cao vs nhirng du doan + Trong qua trinh HS hoat dong nh6m, GV quan sat HS tu hoc, thao luan , tro giup kip thoi cac em c�n h6 tro Ghi nhan kSt qua cua cac nh6m HS c San ph�m hoat d(>ng: Bao cao hoat dong nh6m va noi dung ghi VO HS + Luc tu tac dung len day d�n mang dong dien +Cam irng tir + 1Jng dung CUa 11,l'C tu Va cam irng tu HD 4: Tir truong cua dong di�n co dang d�c bi�t a MlJC tieu hoat d(>ng: Tim hiSu Tu tnrong cua dong di�n c6 dang d�c biet N(>i dung: + Tu tnrong cua dong di�n thang dai: phuong, chiSu cua duong sue tu + Tu tnrong cua dong di�n tron phuong chiSu cua dtrong sue tu + Tu tnrong cua 6ng day dai mang dong dien.phuong chiSu cua dirong sue tu + Ung dung thirc tS cuoc song b GQ'i y t6 chirc hoat d(>ng: - Gv d�t v�n dS bing viec thong qua video dS cac em thuc hien nhiem vu hoc t�p + HS nhan nhiem vu chuyen giao cua GV, ghi VO y kiSn cua minh vacua cac vien nh6m Thao luau nh6m dS dira bao cao vs nhirng du doan + Trong qua trinh HS hoat dong nh6m, GV quan sat HS nr hoc, thao luan , tro giup kip thoi cac em c�n h6 tro Ghi nhan kSt qua cua cac nh6m HS c San ph�m hoat d(>ng: Bao cao hoat dong nh6m va noi dung ghi VO HS + Tu tnrong cua dong di�n thang dai: B = 2.10-1I/r + Tu tnrong cua dong dien tron: B = 2.10-1In:/r + Tu tnrong cua 6ng day dai mang dong dien, B HD 5: Tim hi€u v� luc lorenx a Muc tieu hoat d(>ng:Tim hi€u v� l\l'c lorenx + Phuong va chiSu cua 11,Ic lorenx + DQ cua 11,l'C lorenx + Ung dung thuc tS cuoc song b GQ'i y t6 chirc hoat d(>ng: Ion = 4.I0-7INn:/7 18 - Gv d�t v§n dS bang viec thong qua video dS cac em thuc hien nhiem vu hoc tap + HS nhan nhiem vu chuyen giao cua GV, ghi v& y kiSn cua minh vacua cac vien nh6m Thao luan nh6m dS dira bao cao vs nhirng du doan + Trong qua trinh HS hoat dong nh6m, GV quan sat HS nr hoc, thao luan , tro giup kip thoi cac em c�n h6 tro Ghi nhan kSt qua cua cac nh6m HS c San ph�m hoat d(>ng: Bao cao hoat dong nh6m va noi dung ghi v& HS + Phuong va chiSu cua lire lorenx xac dinh theo quy tic ban tay trai + D9 Ion cua hrc lorenx : f = qvBsina BUOC 3: LUY�N T4P HD 6: H� th6ng hoa ki�n thirc - bai t�p a MtJC tieu hoat d(>ng: H� thong h6a kiSn thirc vs tu tnrong Van khai niem tu tnrong va lire tu dS giai cac bai t?p dinh hrong ciing nhu dinh tinh vs bai toan tu tnrong N9i dung: + HS lam viec nh6m, tom tit cac kiSn tlnrc vs tu tnrong, neu noi dung kiSn thirc vs chuong tu tnrong + Van dung kiSn thirc thirc giai thich mot s6 hien nrong va cho HS luyen t?p theo mot s6 cau hoi , bai tjp da bien SO?n bai b GQi y t6 chirc hoat d(>ng: + GV yeu c�u lam viec nh6m, cit cac kiSn thirc vs tu tnrong Ggi y HS SU dung SO' df> tu dS trinh bay + Nh6m HS thuc hien nhiem vu t6ng kSt kiSn thirc + HS gio thieu san pham cua nh6m tnroc lap va thao luan + GV h� thong va cung HS ch6t kiSn thirc c San ph�m hoat d(>ng: Hean bao cao hoc t?p cua nh6m va n9i dung v& ghi HS BUOC 4: V4N Dl)NG VA MO RQNG HD 6: Huong d�n v� nha lam cac bai t�p v� dinh lu�t Niu Ton Tim hi�u nhfrng ung dung cua tir truong a MtJC tieu hoat d(>ng: + Van dung n9i kiSn tlnrc cua tu tnrong va hrc tu dS giai cac bai t?p + Neu duoc irng dung cua tu tnrong + Tim hiSu them img dung cua tu tnrong thirc tS b GQi y t6 chirc hoat d(>ng: 19 + G'V yeu c�u HS lam viec a nha, ghi vao v& va nop lai cho GV + Gv goi y HS viec tim hiSu thong tin tren mang vs ung dung cua tu tnrong c San ph�m hoat d(>ng: Bai lam cua HS va Sl,I hiSu biet cua HS vs tu tnrong, irng dung cac khai niem cuoc song IV Cau hoi ki�m tra danh gia va h� th6ng bai bai t�p cho chu d� GV lira chon cac cau hoi duoi day dS ren ki nang hoc bai va lam bai t�p, kiSm tra, danh gia kSt qua hoc t�p cua HS hoc tu tnrong Cau hoi ki�m tra danh gia chii d� Cau hoi iY mire d(> nh�n bi�t Cau 1.: Chon mot dap an sai noi vS tu tnrong: A Tai m6i diSm tu tnrong chi ve diroc mot va chi mot duong cam irng tu di qua B Cac duong cam ung tu la nhirng dirong cong khong khep kin C Cac duong cam irng tu khong c�t D Tinh ch�t ca ban cua tu tnrong la tac dung lire tu len nam cham hay dong dien d�t no Cau 2: Cong thirc nao sau day tinh cam irng tu tai tam cua vong day tron co ban kinh R mang dong dien I: A B = 2.l0-7I/R B B = 2n.l0-7I/R C B = 2n.l0-7I.R D B = 4n.l07I/R Cau 3: Dap an nao sau day dung noi vS duong sue tu: A xu�t phat tu - co, kSt thuc tai + 00 B xu�t phat tai Cl,IC hie, kSt thuc tai Cl,IC nam C xu�t phat tai Cl,IC nam, ket thuc tai Cl,IC hie D la dirong cong kin nen noi chung khong co diSm b�t d�u va kSt thuc Cau 4.: Dap an nao sau day dung n6i vS nrong tac giira hai dong dien thing song song: A cung chiSu thi d�y B cung chieu thi h�t C nguoc chiSu thi hut D cung chieu thi day, nguoc chiSu thi hut Cau 5: Mot hat proton chuyen dong voi van tf>c r0 vao tu tnrong theo phuong song song voi duong sue tu thi: A dong nang cua proton tang B van tf>c cua proton tang C huong chuyen dong cua proton khong df>i D tf>c d(> khong df>i nhung huong chuyen dong cua proton thay df>i Cau 6: Luc Lorenxo tac dung len mot dien tich q chuyen dong tron tu tnrong co dac diem: A Iuon huong vs tam cua quy dao B luon tiSp tuyen voi quy dao C chi huong vao tam q >O D chira kSt lu�n duqc vi ph1,1 thu(>c vao hu6ng cua B SangKienK.inh_"1ghiem.or g Cau hoi iY muc d(> thong hi�u 20 SangKienK.inh_"1ghiem.or g ... hoc sinh chuyen THPT" Ten ki�n i/J va ta chtec d{Jy hoc phiit triJn 'Tic tneong - V{J,t li 11 sang "Xdy dung va t6 chuc day hoc phat trien nang luc hoc sinh chuyen ad 'Tic trutrng - Vgt li 11. .. qua viec tim hiSu va huong d�n hoc sinh cai d?t thiSt bi, phan mSm irng dung cong nghe 4.o chuyen dS day hoc phat triSn nang lire hoc sinh + VS phia hoc sinh Hoc sinh hinh va phat triSn cac nang... hrc hoc sinh" cua bt;> GD&DT xu�t ban thang 12/2014 (trang 25 dSn trang 34) va Tai lieu t�p hu�n: "Sinh heat chuyen mon phuong phap va ky thuat tf> clnrc hoat dong nr hoc cua hoc sinh trung hoc