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{"id":32243,"date":"2018-07-01T13:25:12","date_gmt":"2018-07-01T06:25:12","guid":{"rendered":"https:\/\/lop12.edu.vn\/?p=32243"},"modified":"2018-07-01T13:25:12","modified_gmt":"2018-07-01T06:25:12","slug":"giao-vien-mat-20-phut-moi-giai-duoc-cau-kho-de-toan-thpt-quoc-gia","status":"publish","type":"post","link":"https:\/\/lop12.edu.vn\/giao-vien-mat-20-phut-moi-giai-duoc-cau-kho-de-toan-thpt-quoc-gia\/","title":{"rendered":"Gi\u00e1o vi\u00ean m\u1ea5t 20 ph\u00fat m\u1edbi gi\u1ea3i \u0111\u01b0\u1ee3c c\u00e2u kh\u00f3 \u0111\u1ec1 To\u00e1n THPT qu\u1ed1c gia"},"content":{"rendered":"

H\u01a1n 10 c\u00e2u h\u1ecfi cu\u1ed1i \u0111\u1ec1 To\u00e1n THPT qu\u1ed1c gia 2018 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 d\u00e0i v\u00e0 qu\u00e1 kh\u00f3, gi\u00e1o vi\u00ean ph\u1ea3i m\u1ea5t 15-20 ph\u00fat m\u1edbi gi\u1ea3i \u0111\u01b0\u1ee3c m\u1ed9t c\u00e2u.<\/p>\n

K\u1ebft th\u00fac k\u1ef3 thi THPT qu\u1ed1c gia 2018, nhi\u1ec1u gi\u00e1o vi\u00ean v\u00e0 gi\u1ea3ng vi\u00ean \u0111\u1ea1i h\u1ecdc cho r\u1eb1ng \u0111\u1ec1 thi To\u00e1n qu\u00e1 d\u00e0i v\u00e0 kh\u00f3. M\u1ed9t s\u1ed1 nh\u00e0 gi\u00e1o v\u1edbi h\u1ecdc v\u1ecb ti\u1ebfn s\u0129 than kh\u00f4ng th\u1ec3 l\u00e0m h\u1ebft 50 c\u00e2u tr\u1eafc nghi\u1ec7m trong 90 ph\u00fat.<\/p>\n

Nhi\u1ec1u c\u00e2u gi\u1ea3i m\u1ea5t 15-20 ph\u00fat<\/strong><\/p>\n

Nghi\u00ean c\u1ee9u \u0111\u1ec1 To\u00e1n, TS Tr\u1ea7n Nam D\u0169ng (Khoa To\u00e1n – Tin h\u1ecdc, \u0110\u1ea1i h\u1ecdc Khoa h\u1ecdc T\u1ef1 nhi\u00ean, \u0110\u1ea1i h\u1ecdc Qu\u1ed1c gia TP HCM) cho r\u1eb1ng, c\u1ea5u tr\u00fac \u0111\u1ec1 gi\u1ed1ng \u0111\u1ec1 tham kh\u1ea3o \u0111\u01b0\u1ee3c c\u00f4ng b\u1ed1 v\u00e0o th\u00e1ng 1, ch\u1ee7 y\u1ebfu li\u00ean quan \u0111\u1ebfn ch\u01b0\u01a1ng tr\u00ecnh l\u1edbp 12, c\u00f3 m\u1ed9t ph\u1ea7n nh\u1ecf c\u1ee7a l\u1edbp 11. Song \u0111\u1ed9 kh\u00f3 c\u1ee7a \u0111\u1ec1 b\u00e0i th\u00ec qu\u00e1 s\u1ee9c v\u1edbi ph\u1ea7n l\u1edbn h\u1ecdc sinh. Nhi\u1ec1u c\u00e2u h\u1ecfi trong \u0111\u1ec1 kh\u00f3, ch\u1ec9 c\u00f3 th\u1ec3 t\u00ecm \u0111\u01b0\u1ee3c \u0111\u00e1p s\u1ed1 \u0111\u00fang n\u1ebfu gi\u1ea3i b\u1eb1ng t\u1ef1 lu\u1eadn r\u1ed3i so kh\u1edbp. C\u00f3 nhi\u1ec1u c\u00e2u \u1edf m\u1ee9c r\u1ea5t kh\u00f3, ph\u1ea3i gi\u1ea3i trong 15-20 ph\u00fat.<\/p>\n

“Trung b\u00ecnh m\u1ed7i c\u00e2u ch\u1ec9 g\u1ea7n 2 ph\u00fat \u0111\u1ec3 gi\u1ea3i, n\u1ebfu ch\u1ec9 g\u1eb7p m\u1ed9t c\u00e2u kh\u00f3 nh\u01b0 v\u1eady, th\u00ed sinh \u0111\u00e3 l\u1ea5y m\u1ea5t th\u1eddi gian l\u00e0m b\u00e0i c\u1ee7a 8-9 c\u00e2u kh\u00e1c. Trong \u0111\u1ec1, s\u1ed1 c\u00e2u kh\u00f3 nh\u01b0 v\u1eady kh\u00f4ng ph\u1ea3i m\u1ed9t, c\u0169ng kh\u00f4ng ph\u1ea3i l\u00e0 5, m\u00e0 nhi\u1ec1u h\u01a1n”, \u00f4ng D\u0169ng nh\u1eadn x\u00e9t.<\/p>\n

Theo \u00f4ng D\u0169ng, \u0111\u1ec1 n\u0103m nay c\u01a1 b\u1ea3n gi\u1ea3i quy\u1ebft \u0111\u01b0\u1ee3c m\u1ee5c ti\u00eau x\u00e9t t\u1ed1t nghi\u1ec7p THPT b\u1edfi \u0111\u1ec3 \u0111\u1ea1t \u0111i\u1ec3m 5 kh\u00f4ng kh\u00f3 khi ph\u00e2n n\u1eeda s\u1ed1 c\u00e2u h\u1ecfi d\u1ec5. Song m\u1ee5c \u0111\u00edch ph\u00e2n lo\u1ea1i \u0111\u1ec3 tuy\u1ec3n sinh \u0111\u1ea1i h\u1ecdc th\u00ec kh\u00f4ng m\u1ea5y ch\u1eafc ch\u1eafn, b\u1edfi nhi\u1ec1u h\u1ecdc sinh kh\u00e1 gi\u1ecfi v\u1eabn ph\u1ea3i \u0111\u00e1nh l\u1ee5i (\u0111\u00e1nh b\u1eeba) kh\u00e1 nhi\u1ec1u c\u00e2u tr\u1eafc nghi\u1ec7m kh\u00f3.<\/p>\n

TS D\u0169ng k\u1ec3, khi B\u1ed9 Gi\u00e1o d\u1ee5c v\u00e0 \u0110\u00e0o t\u1ea1o c\u00f4ng b\u1ed1 \u0111\u1ec1 tham kh\u1ea3o, \u00f4ng \u0111\u00e3 g\u00f3p \u00fd \u0111\u1ec1 kh\u00f3 v\u00e0 c\u00f3 qu\u00e1 nhi\u1ec1u c\u00e2u “tr\u1eafc nghi\u1ec7m h\u00f3a t\u1ef1 lu\u1eadn”, song kh\u00f4ng \u0111\u01b0\u1ee3c l\u1eafng nghe. “\u0110\u1ec1 thi th\u1eadt v\u1eeba r\u1ed3i c\u00f2n kh\u00f3 h\u01a1n \u0111\u1ec1 tham kh\u1ea3o. Th\u1ef1c ra, \u0111\u1ec1 ch\u1ec9 c\u1ea7n r\u1ea3i \u0111\u1ec1u ki\u1ebfn th\u1ee9c l\u1edbp 11-12 th\u00ec \u0111\u00e3 \u0111\u1ee7 kh\u00f3 h\u01a1n \u0111\u1ec1 n\u0103m ngo\u00e1i”, \u00f4ng nh\u1eadn x\u00e9t.<\/p>\n

Theo \u00f4ng D\u0169ng, \u0111\u1ec3 l\u00e0m \u0111\u1ec1 tr\u1eafc nghi\u1ec7m To\u00e1n \u0111\u1ea1t ch\u1ea5t l\u01b0\u1ee3ng t\u1ed1t r\u1ea5t kh\u00f3. “N\u1ebfu ch\u1ec9 b\u00e0n s\u1ed1 c\u00e2u v\u00e0 \u0111\u1ed9 kh\u00f3 d\u1ec5 th\u00ec 50 c\u00e2u l\u00e0m trong 90 ph\u00fat c\u0169ng t\u1ed1t, nh\u01b0ng \u0111\u00f3 ph\u1ea3i l\u00e0 nh\u1eefng c\u00e2u m\u00e0 kh\u00f3 nh\u1ea5t c\u0169ng ch\u1ec9 m\u1ea5t 5 ph\u00fat gi\u1ea3i \u0111\u01b0\u1ee3c”, \u00f4ng D\u0169ng n\u00eau quan \u0111i\u1ec3m. N\u00f3i c\u00e1ch kh\u00e1c, \u0111\u1ec1 thi t\u1ed1t l\u00e0 h\u1ecdc sinh c\u00f3 ki\u1ebfn th\u1ee9c v\u1eefng, c\u00f3 t\u01b0 duy v\u00e0 kh\u1ea3 n\u0103ng ph\u00e2n t\u00edch t\u1ed1t c\u00f3 th\u1ec3 l\u00e0m b\u00e0i m\u00e0 kh\u00f4ng c\u1ea7n \u00f4n luy\u1ec7n qu\u00e1 nhi\u1ec1u.<\/p>\n

C\u00e2u h\u1ecfi kh\u00f3, \u0111\u00e1nh \u0111\u1ed1 kh\u00f4ng c\u1ea7n thi\u1ebft<\/strong><\/p>\n

V\u1edbi nhi\u1ec1u n\u0103m kinh nghi\u1ec7m gi\u1ea3ng d\u1ea1y v\u00e0 luy\u1ec7n thi To\u00e1n b\u1eadc THPT, TS Ph\u1ea1m H\u1ed3ng Danh (THPT V\u0129nh Vi\u1ec5n) \u0111\u00e3 s\u1ed1c sau khi \u0111\u1ecdc \u0111\u1ec1 To\u00e1n b\u1edfi 25 c\u00e2u \u0111\u1ea7u kh\u00e1 d\u1ec5, c\u00f2n l\u1ea1i \u1edf m\u1ee9c kh\u00f3 v\u00e0 r\u1ea5t kh\u00f3. “H\u01a1n 10 c\u00e2u cu\u1ed1i c\u1ef1c k\u1ef3 kh\u00f3, t\u00f4i m\u1ea5t 20 ph\u00fat m\u1edbi gi\u1ea3i \u0111\u01b0\u1ee3c m\u1ed9t c\u00e2u th\u00ec li\u1ec7u h\u1ecdc sinh kh\u00e1 gi\u1ecfi c\u00f3 ch\u1eafc l\u00e0m xong trong v\u00e0i ph\u00fat”, \u00f4ng \u0111\u1eb7t c\u00e2u h\u1ecfi.<\/p>\n

Theo \u00f4ng Danh, th\u00ed sinh v\u1edbi l\u1ef1c h\u1ecdc trung b\u00ecnh kh\u00f3 ki\u1ebfm \u0111i\u1ec3m 5 m\u00e0 ch\u1ec9 ph\u1ed5 bi\u1ebfn 3-4. H\u1ecdc sinh gi\u1ecfi c\u0169ng kh\u00f3 ki\u1ebfm \u0111i\u1ec3m 9, ch\u01b0a n\u00f3i \u0111\u1ebfn \u0111i\u1ec3m tuy\u1ec7t \u0111\u1ed1i. “D\u0129 nhi\u00ean, v\u1edbi m\u1ed9t \u0111\u1ec1 thi v\u1edbi m\u1ee5c \u0111\u00edch hai trong m\u1ed9t th\u00ec ph\u1ea3i c\u00f3 s\u1ed1 l\u01b0\u1ee3ng c\u00e2u h\u1ecfi kh\u00f3 t\u01b0\u01a1ng \u0111\u1ed1i nhi\u1ec1u \u0111\u1ec3 ph\u00e2n lo\u1ea1i th\u00ed sinh. Song, \u0111\u1ec1 b\u00e0i c\u00f3 qu\u00e1 nhi\u1ec1u c\u00e2u h\u1ecfi kh\u00f3 kh\u00f4ng c\u1ea7n thi\u1ebft”, \u00f4ng Danh n\u00f3i v\u00e0 cho bi\u1ebft v\u1edbi m\u1ed9t gi\u00e1o vi\u00ean d\u00e0y d\u1eb7n kinh nghi\u1ec7m c\u00f3 khi ph\u1ea3i m\u1ea5t 3 ti\u1ebfng m\u1edbi ho\u00e0n th\u00e0nh xong \u0111\u1ec1 n\u00e0y.<\/p>\n

M\u1ed9t gi\u00e1o vi\u00ean To\u00e1n c\u00f3 th\u00e2m ni\u00ean \u1edf tr\u01b0\u1eddng THPT t\u1ea1i TP HCM cho bi\u1ebft, kho\u1ea3ng 50% s\u1ed1 c\u00e2u h\u1ecfi trong \u0111\u1ec1 To\u00e1n ph\u00f9 h\u1ee3p v\u1edbi l\u1ef1c h\u1ecdc trung b\u00ecnh c\u1ee7a ph\u1ea7n l\u1edbn h\u1ecdc sinh. Song, c\u0169ng kh\u00f4ng th\u1ec3 kh\u1eb3ng \u0111\u1ecbnh h\u1ecdc sinh trung b\u00ecnh c\u00f3 th\u1ec3 l\u00e0m \u0111\u00fang h\u1ebft s\u1ed1 c\u00e2u n\u00e0y \u0111\u1ec3 \u0111\u1ea1t \u0111\u01b0\u1ee3c \u0111i\u1ec3m 5 m\u00e0 c\u1ea7n c\u00f3 s\u1ef1 “\u0103n may” \u1edf nh\u1eefng c\u00e2u c\u00f2n l\u1ea1i, v\u00e0 ph\u1ea7n l\u1edbn l\u00e0 nh\u1edd \u0111\u00e1nh l\u1ee5i.<\/p>\n

“R\u1ea5t nhi\u1ec1u c\u00e2u, \u0111\u1ebfn gi\u00e1o vi\u00ean c\u0169ng m\u1ea5t m\u1ea5y ph\u00fat m\u1edbi t\u00ecm ra c\u00e1ch gi\u1ea3i ch\u1ee9 \u0111\u1eebng n\u00f3i \u0111\u1ebfn h\u1ecdc tr\u00f2. L\u1ebd ra c\u00e2u h\u1ecfi kh\u00f3 ch\u1ec9 kho\u1ea3ng ch\u1ee5c c\u00e2u ch\u1ee9 kh\u00f4ng chi\u1ebfm s\u1ed1 l\u01b0\u1ee3ng l\u1edbn \u0111\u1ebfn th\u1ebf”, gi\u00e1o vi\u00ean n\u00e0y b\u00e0y t\u1ecf. Theo \u00f4ng, c\u00e2u h\u1ecfi kh\u00f3 trong \u0111\u1ec1 To\u00e1n v\u1eeba qua mang nhi\u1ec1u t\u00ednh \u0111\u00e1nh \u0111\u1ed1, kh\u00f4ng ki\u1ebfm tra \u0111\u01b0\u1ee3c k\u1ef9 n\u0103ng gi\u1ea3i to\u00e1n, suy lu\u1eadn c\u1ee7a th\u00ed sinh.<\/p>\n

“B\u1ed9 c\u1ea7n xem l\u1ea1i c\u00e1ch ra \u0111\u1ec1 tr\u1eafc nghi\u1ec7m To\u00e1n. N\u1ebfu \u0111\u00e3 l\u00e0 \u0111\u1ec1 tr\u1eafc nghi\u1ec7m th\u00ec c\u00e1ch l\u00e0m c\u0169ng c\u1ea7n ph\u1ea3i theo ki\u1ec3u tr\u1eafc nghi\u1ec7m. \u0110\u1eb1ng n\u00e0y r\u1ea5t nhi\u1ec1u c\u00e2u th\u1ef1c ch\u1ea5t l\u00e0 t\u1ef1 lu\u1eadn, \u0111\u1ec3 gi\u1ea3i m\u1ea5t th\u1eddi gian kh\u00f4ng thua g\u00ec m\u1ed9t c\u00e2u h\u1ecfi t\u1ef1 lu\u1eadn theo l\u1ed1i c\u0169. C\u00f2n n\u1ebfu \u0111\u00e3 ra kh\u00f3 th\u00ec th\u1eddi gian ph\u1ea3i k\u00e9o d\u00e0i, 120 th\u1eadm ch\u00ed 150 ph\u00fat”, th\u1ea7y gi\u00e1o g\u00f3p \u00fd.<\/p>\n

Ngu\u1ed3n: Vnexpress<\/em><\/p>\n

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H\u01a1n 10 c\u00e2u h\u1ecfi cu\u1ed1i \u0111\u1ec1 To\u00e1n THPT qu\u1ed1c gia 2018 \u0111\u01b0\u1ee3c \u0111\u00e1nh gi\u00e1 l\u00e0 d\u00e0i v\u00e0 qu\u00e1 kh\u00f3, gi\u00e1o vi\u00ean ph\u1ea3i m\u1ea5t 15-20 ph\u00fat m\u1edbi gi\u1ea3i \u0111\u01b0\u1ee3c m\u1ed9t c\u00e2u. K\u1ebft th\u00fac k\u1ef3 thi THPT qu\u1ed1c gia 2018, nhi\u1ec1u gi\u00e1o vi\u00ean v\u00e0 gi\u1ea3ng vi\u00ean \u0111\u1ea1i h\u1ecdc cho r\u1eb1ng \u0111\u1ec1 thi To\u00e1n qu\u00e1 d\u00e0i v\u00e0 kh\u00f3. 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K\u1ebft th\u00fac k\u1ef3 thi THPT qu\u1ed1c gia 2018, nhi\u1ec1u gi\u00e1o vi\u00ean v\u00e0 gi\u1ea3ng vi\u00ean \u0111\u1ea1i h\u1ecdc cho r\u1eb1ng \u0111\u1ec1 thi To\u00e1n qu\u00e1 d\u00e0i v\u00e0 kh\u00f3. 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