Trong \u0111\u1ec1 thi m\u00f4n \u0110\u1ecba l\u00fd, c\u00e2u h\u1ecfi ph\u1ea7n bi\u1ec3u \u0111\u1ed3 th\u01b0\u1eddng gi\u1eef kho\u1ea3ng 3 \u0111i\u1ec3m. \u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi \u0103n \u0111i\u1ec3m gi\u00fap th\u00ed sinh \u0111\u1ea1t \u0111i\u1ec3m cao. Tuy nhi\u00ean, \u0111\u1ec3 l\u00e0m t\u1ed1t v\u00e0 l\u1ea5y \u0111\u01b0\u1ee3c s\u1ed1 \u0111i\u1ec3m tuy\u1ec7t \u0111\u1ed1i cho c\u00e2u h\u1ecfi n\u00e0y th\u00ec th\u00ed sinh c\u1ea7n n\u1eafm v\u1eefng nh\u1eefng ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 c\u00e1c d\u1ea1ng bi\u1ec3u \u0111\u1ed3 \u0111\u1ec3 tr\u00e1nh tr\u01b0\u1eddng h\u1ee3p b\u1ecb nh\u1ea7m l\u1eabn d\u1eabn \u0111\u1ebfn m\u1ea5t \u0111i\u1ec3m ho\u00e0n to\u00e0n. D\u01b0\u1edbi \u0111\u00e2y l\u00e0 nh\u1eefng d\u1ea5u hi\u1ec7u nh\u1eadn bi\u1ebft c\u0169ng nh\u01b0 c\u00e1ch v\u1ebd \u0111\u1ed1i v\u1edbi t\u1eebng d\u1ea1ng bi\u1ec3u \u0111\u1ed3:<\/p>\n
![\"\"](\"https:\/\/onthitot.com\/wp-content\/uploads\/2018\/06\/cac-dang-bieu-do-thuong-gap-trong-mon-dia-li.png\")
<\/h2>\nCh\u00fang ta c\u1ea7n v\u1ebd bi\u1ec3u \u0111\u1ed3 tr\u00f2n khi \u0111\u1ec1 y\u00eau c\u1ea7u v\u1ebd bi\u1ec3u \u0111\u1ed3 m\u00f4 t\u1ea3 v\u1ec1 c\u01a1 c\u1ea5u, t\u1ef7 l\u1ec7 c\u00e1c th\u00e0nh ph\u1ea7n trong m\u1ed9t t\u1ed5ng th\u1ec3. \u0110\u1ed3ng th\u1eddi, s\u1ed1 li\u1ec7u c\u1ee7a \u0111\u1ec1 ra ph\u1ea3i \u00edt h\u01a1n ho\u1eb7c b\u1eb1ng 3 n\u0103m.<\/p>\n
B\u01b0\u1edbc 1: X\u1eed l\u00fd s\u1ed1 li\u1ec7u. B\u01b0\u1edbc n\u00e0y \u00e1p d\u1ee5ng \u0111\u1ed1i v\u1edbi nh\u1eefng \u0111\u1ec1 b\u00e0i c\u00f3 s\u1ed1 li\u1ec7u th\u00f4 nh\u01b0: t\u1ec9 \u0111\u1ed3ng, tri\u1ec7u ha, tri\u1ec7u ng\u01b0\u1eddi th\u00ec ch\u00fang ta c\u1ea7n x\u1eed l\u00fd s\u1ed1 li\u1ec7u v\u1ec1 d\u1ea1ng %.<\/p>\n
B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh b\u00e1n k\u00ednh. Bi\u1ec3u \u0111\u1ed3 tr\u00f2n c\u00f3 th\u1ec3 c\u00f9ng b\u00e1n k\u00ednh nh\u1eefng c\u0169ng c\u00f3 th\u1ec3 kh\u00e1c b\u00e1n k\u00ednh. Trong tr\u01b0\u1eddng h\u1ee3p kh\u00e1c b\u00e1n k\u00ednh th\u00ec ta c\u1ea7n th\u1ef1c hi\u1ec7n th\u00eam b\u01b0\u1edbc t\u00ednh b\u00e1n k\u00ednh c\u1ee7a bi\u1ec3u \u0111\u1ed3. Ch\u00fa \u00fd, b\u00e1n k\u00ednh c\u1ee7a h\u00ecnh tr\u00f2n c\u1ea7n ph\u00f9 h\u1ee3p v\u1edbi kh\u1ed5 gi\u1ea5y \u0111\u1ec3 \u0111\u1ea3m b\u1ea3o t\u00ednh khoa h\u1ecdc v\u00e0 m\u0129 thu\u1eadt ch\u00f4 b\u1ea3n \u0111\u1ed3.<\/p>\n
B\u01b0\u1edbc 3: Chia h\u00ecnh tr\u00f2n th\u00e0nh t\u1eebng nan qu\u1ea1t, m\u1ed7i nan qu\u1ea1t t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c s\u1ed1 li\u1ec7u c\u1ee7a \u0111\u1ec1 ra ho\u1eb7c s\u1ed1 li\u1ec7u m\u00e0 ta \u0111\u00e3 x\u1eed l\u00fd. Ch\u00fa \u00fd, c\u1ea7n b\u1eaft \u0111\u1ea7u chia t\u1eebng ph\u1ea7n t\u1eeb kim ch\u1ec9 12 gi\u1edd, b\u1eaft \u0111\u1ea7u v\u1ebd l\u1ea7n l\u01b0\u1ee3t t\u1eebng ph\u1ea7n theo chi\u1ec1u quay c\u1ee7a kim \u0111\u1ed3ng h\u1ed3. Th\u1ee9 t\u1ef1 c\u00e1c th\u00e0nh ph\u1ea7n c\u1ee7a c\u00e1c bi\u1ec3u \u0111\u1ed3 c\u1ea7n gi\u1ed1ng nhau \u0111\u1ec3 ti\u1ec7n cho vi\u1ec7c so s\u00e1nh<\/p>\n
B\u01b0\u1edbc 4: Ho\u00e0n thi\u1ec7n bi\u1ec3u \u0111\u1ed3. Th\u1ef1c hi\u1ec7n vi\u1ec7c ghi s\u1ed1 li\u1ec7u % v\u00e0 k\u00ed hi\u1ec7u ri\u00eang cho t\u1eebng ph\u1ea7n c\u1ee7a bi\u1ec3u \u0111\u1ed3. L\u1eadp b\u1ea3ng ch\u00fa gi\u1ea3i v\u00e0 cu\u1ed1i c\u00f9ng l\u00e0 \u0111\u1eb7t t\u00ean cho bi\u1ec3u \u0111\u1ed3.<\/p>\n
Tr\u00ean th\u1ef1c t\u1ebf, b\u1ea1n c\u00f3 th\u1ec3 s\u1ebd d\u1ec5 b\u1ecb nh\u1ea7m l\u1eabn gi\u1eefa bi\u1ec3u \u0111\u1ed3 mi\u1ec1n v\u00e0 bi\u1ec3u \u0111\u1ed3 tr\u00f2n b\u1edfi c\u1ea3 2 d\u1ea1ng bi\u1ec3u \u0111\u1ed3 n\u00e0y \u0111\u1ec1u c\u00f3 y\u00eau c\u1ea7u v\u1ebd bi\u1ec3u \u0111\u1ed3 mi\u00eau t\u1ea3 c\u01a1 c\u1ea5u t\u1ef7 tr\u1ecdng. Tuy nhi\u00ean, n\u1ebfu nh\u01b0 bi\u1ec3u \u0111\u1ed3 tr\u00f2n gi\u1edbi h\u1ea1n t\u1eeb 3 n\u0103m tr\u1edf xu\u1ed1ng, c\u00f2n bi\u1ec3u \u0111\u1ed3 mi\u1ec1n c\u00f3 s\u1ed1 li\u1ec7u tr\u00ean 3 n\u0103m. D\u1ea1ng bi\u1ec3u \u0111\u1ed3 n\u00e0y th\u1ec3 hi\u1ec7n \u0111\u01b0\u1ee3c c\u1ea3 c\u01a1 c\u1ea5u v\u00e0 s\u1ef1 bi\u1ebfn \u0111\u1ed9ng, ph\u00e1t tri\u1ec3n c\u1ee7a c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng.<\/p>\n
B\u01b0\u1edbc 1: v\u1ebd khung t\u1ed5ng qu\u00e1t cho bi\u1ec3u \u0111\u1ed3. Khung c\u1ee7a bi\u1ec3u \u0111\u1ed3 mi\u1ec1n l\u00e0 m\u1ed9t h\u00ecnh ch\u1eef nh\u1eadt, m\u1ed7i \u0111\u1ed1i t\u01b0\u1ee3ng l\u00e0 m\u1ed7i mi\u1ec1n kh\u00e1c nhau v\u00e0 \u0111\u01b0\u1ee3c ch\u1ed3ng l\u00ean nhau, chi\u1ec1u cao c\u1ee7a h\u00ecnh ch\u1eef nh\u1eadt th\u1ec3 hi\u1ec7n \u0111\u01a1n v\u1ecb c\u1ee7a bi\u1ec3u \u0111\u1ed3 c\u00f2n chi\u1ec1u d\u00e0i th\u01b0\u1eddng th\u1ec3 hi\u1ec7n th\u1eddi gian. Th\u1eddi \u0111i\u1ec3m \u0111\u1ea7u ti\u00ean ph\u1ea3i \u0111\u1eb7t tr\u00ean c\u1ea1nh b\u00ean tr\u00e1i c\u1ee7a bi\u1ec3u \u0111\u1ed3 c\u00f2n th\u1eddi \u0111i\u1ec3m cu\u1ed1i c\u00f9ng ph\u1ea3i tr\u00f9ng v\u1edbi c\u1ea1nh b\u00ean ph\u1ea3i.<\/p>\n
B\u01b0\u1edbc 2: V\u1ebd l\u1ea7n l\u01b0\u1ee3t t\u1eebng mi\u1ec1n<\/p>\n
B\u01b0\u1edbc 3: ho\u00e0n thi\u1ec7n. \u0110i\u1ec1n t\u00ean, k\u00fd hi\u1ec7u cho t\u1eebng mi\u1ec1n; t\u00ean c\u1ee7a bi\u1ec3u \u0111\u1ed3; l\u1eadp ch\u00fa gi\u1ea3i cho bi\u1ec3u \u0111\u1ed3.<\/p>\n
![\"\"](\"https:\/\/onthitot.com\/wp-content\/uploads\/2018\/06\/cac-dang-bieu-do-thuong-gap-trong-mon-dia-li-7.jpg\")
D\u1ea1ng bi\u1ec3u \u0111\u1ed3 n\u00e0y \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 ch\u1ec9 ra s\u1ef1 kh\u00e1c bi\u1ec7t v\u1ec1 qui m\u00f4, s\u00f4 l\u01b0\u1ee3ng, kh\u1ed1i l\u01b0\u1ee3ng\u2026 c\u1ee7a m\u1ed9t hay m\u1ed9t s\u1ed1 \u0111\u1ed1i t\u01b0\u1ee3ng \u0111\u1ecba l\u00fd ho\u1eb7c s\u1eed d\u1ee5ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n s\u1ef1 t\u01b0\u01a1ng quan v\u1ec1 \u0111\u1ed9 l\u1edbn gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng.<\/p>\n
Ta c\u1ea7n v\u1ebd bi\u1ec3u \u0111\u1ed3 c\u1ed9t khi y\u00eau c\u1ea7u c\u1ee7a \u0111\u1ec1 b\u00e0i l\u00e0 v\u1ebd bi\u1ec3u \u0111\u1ed3 th\u1ec3 hi\u1ec7n qui m\u00f4, s\u1ef1 ph\u00e1t tri\u1ec3n, so s\u00e1nh s\u1ef1 t\u01b0\u01a1ng quan gi\u1eefa c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng c\u1ee7a c\u00e1c th\u00e0nh ph\u1ea7n.<\/p>\n
B\u01b0\u1edbc 1: X\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 th\u00edch h\u1ee3p tr\u00ean gi\u1ea5y<\/p>\n
B\u01b0\u1edbc 2: K\u1ebb h\u1ec7 tr\u1ee5c vu\u00f4ng g\u00f3c, tr\u1ee5c tung th\u1ec3 hi\u1ec7n \u0111\u01a1n v\u1ecb c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng, tr\u1ee5c ho\u00e0nh th\u1ec3 hi\u1ec7n c\u00e1c m\u1ed1c th\u1eddi gian ho\u1eb7c c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng kh\u00e1c nhau.<\/p>\n
B\u01b0\u1edbc 3: V\u1ebd l\u1ea7n l\u01b0\u1ee3t c\u00e1c c\u1ed9t t\u01b0\u01a1ng \u1ee9ng v\u1edbi c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng. Ch\u00fa \u00fd, b\u1ec1 ngang c\u00e1c c\u1ed9t ph\u1ea3i b\u1eb1ng nhau, kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c c\u1ed9t ph\u1ea3i b\u1eb1ng nhau (n\u1ebfu l\u00e0 c\u00e1c \u0111\u1ed1i t\u01b0\u1ee3ng) ho\u1eb7c ph\u1ea3i chia theo \u0111\u00fang t\u1ef7 l\u1ec7 ph\u00f9 h\u1ee3p (n\u1ebfu l\u00e0 c\u00e1c m\u1ed1c th\u1eddi gian)<\/p>\n
B\u01b0\u1edbc 4: Ho\u00e0n thi\u1ec7n, \u0111i\u1ec1n s\u1ed1 li\u1ec7u t\u01b0\u01a1ng \u1ee9ng tr\u00ean \u0111\u1ea7u ho\u1eb7c trong m\u1ed7i c\u1ed9t, l\u1eadp ch\u00fa gi\u1ea3i, ghi t\u00ean bi\u1ec3u \u0111\u1ed3.<\/p>\n
C\u00e1c d\u1ea1ng bi\u1ec3u \u0111\u1ed3 c\u1ed9t th\u01b0\u1eddng g\u1eb7p: bi\u1ec3u \u0111\u1ed3 c\u1ed9t \u0111\u01a1n, bi\u1ec3u \u0111\u1ed3 c\u1ed9t gh\u00e9p, bi\u1ec3u \u0111\u1ed3 c\u1ed9t ch\u1ed3ng, bi\u1ec3u \u0111\u1ed3 thanh ngang.<\/p>\n
L\u00e0 d\u1ea1ng bi\u1ec3u \u0111\u1ed3 \u0111\u01b0\u1ee3c d\u00f9ng \u0111\u1ec3 th\u1ec3 hi\u1ec7n s\u1ef1 thay \u0111\u1ed5i c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1ecba l\u00fd khi s\u1ed1 n\u0103m nhi\u1ec1u v\u00e0 c\u00f3 s\u1ef1 li\u00ean t\u1ee5c ho\u1eb7c th\u1ec3 hi\u1ec7n t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng c\u1ee7a m\u1ed9t hay nhi\u1ec1u \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1ecba l\u00ed c\u00f3 \u0111\u01a1n v\u1ecb gi\u1ed1ng ho\u1eb7c c\u0169ng c\u00f3 th\u1ec3 kh\u00e1c nhau.<\/p>\n
\u0111\u1ec1 b\u00e0i y\u00eau c\u1ea7u th\u1ec3 hi\u1ec7n s\u1ef1 ph\u00e1t tri\u1ec3n ho\u1eb7c t\u1ed1c \u0111\u1ed9 t\u0103ng tr\u01b0\u1edfng qua c\u00e1c m\u1ed1c th\u1eddi gian.<\/p>\n
B\u01b0\u1edbc 1: K\u1ebb h\u1ec7 tr\u1ee5c t\u1ecda \u0111\u1ed9, trong \u0111\u00f3: tr\u1ee5c tung th\u1ec3 hi\u1ec7n \u0111\u01a1n v\u1ecb c\u1ee7a c\u00e1c \u0111\u1ea1i l\u01b0\u1ee3ng \u0111\u1ecba l\u00ed, tr\u1ee5c ho\u00e0nh th\u1ec3 hi\u1ec7n c\u00e1c m\u00f3c th\u1eddi gian. N\u1ebfu c\u00f3 2 \u0111\u01a1n v\u1ecb th\u00ec c\u1ea7n k\u1ebb 2 tr\u1ee5c \u0111\u1ee9ng 2 b\u00ean, m\u1ed7i tr\u1ee5c th\u1ec3 hi\u1ec7n\u00a0 m\u1ed9t \u0111\u01a1n v\u1ecb.<\/p>\n
B\u01b0\u1edbc 2: X\u00e1c \u0111\u1ecbnh t\u1ef7 l\u1ec7 th\u00edch h\u1ee3p \u1edf 2 tr\u1ee5c, \u0111\u00e1nh d\u1ea5u th\u00e0nh t\u1ecda \u0111\u1ed9. Ch\u00fa \u00fd v\u1ec1 kho\u1ea3ng c\u00e1ch gi\u1eefa c\u00e1c m\u1ed1c th\u1eddi gian c\u0169ng nh\u01b0 s\u1ef1 t\u01b0\u01a1ng quan gi\u1eefa \u0111\u1ed9 cao c\u1ee7a tr\u1ee5c tung v\u00e0 \u0111\u1ed9 d\u00e0i c\u1ee7a tr\u1ee5c ho\u00e0nh nh\u1eb1m b\u1ea3o \u0111\u1ea3m t\u00ednh th\u1ea9m m\u1ef9 c\u1ee7a bi\u1ec3u \u0111\u1ed3.<\/p>\n
B\u01b0\u1edbc 3: Ho\u00e0n thi\u1ec7n bi\u1ec3u \u0111\u1ed3: ghi s\u1ed1 li\u1ec7u v\u00e0o c\u00e1c t\u1ecda \u0111\u1ed9 \u0111\u00e3 x\u00e1c \u0111\u1ecbnh \u1edf b\u01b0\u1edbc tr\u00ean, n\u1ebfu \u0111\u1ec1 k\u00ed hi\u1ec7u th\u00ec c\u1ea7n l\u1eadp b\u1ea3ng ch\u00fa th\u00edch, \u0111\u1ec1 t\u00ean bi\u1ec3u \u0111\u1ed3.<\/p>\n
H\u1ecdc sinh c\u1ea7n n\u1eafm v\u1eefng c\u00e1c ki\u1ebfn th\u1ee9c c\u01a1 b\u1ea3n v\u1ec1 c\u00e1c lo\u1ea1i bi\u1ec3u \u0111\u1ed3, h\u1ecdc c\u00e1ch ph\u00e2n bi\u1ec7t gi\u1eefa c\u00e1c d\u1ea1ng \u0111\u1ec3 tr\u00e1nh b\u1ecb nh\u1ea7m l\u1eabn. B\u00ean c\u1ea1nh \u0111\u00f3, vi\u1ec7c r\u00e8n luy\u1ec7n v\u1ebd bi\u1ec3u \u0111\u1ed3 th\u01b0\u1eddng xuy\u00ean \u0111\u1ec3 c\u00f3 thao t\u00e1c th\u1ef1c hi\u1ec7n nhanh v\u00e0 c\u00f3 k\u1ef9 n\u0103ng v\u1ebd t\u1ed1t \u0111\u1ec3 r\u00fat ng\u1eafn th\u1eddi gian l\u00e0m d\u1ea1ng c\u00e2u h\u1ecfi n\u00e0y \u0111\u1ec3 gi\u00e0nh th\u00eam th\u1eddi gian v\u00e0o c\u00e1c c\u00e2u h\u1ecfi l\u00fd thuy\u1ebft.<\/p>\n","protected":false},"excerpt":{"rendered":"
Trong \u0111\u1ec1 thi m\u00f4n \u0110\u1ecba l\u00fd, c\u00e2u h\u1ecfi ph\u1ea7n bi\u1ec3u \u0111\u1ed3 th\u01b0\u1eddng gi\u1eef kho\u1ea3ng 3 \u0111i\u1ec3m. \u0110\u00e2y l\u00e0 c\u00e2u h\u1ecfi \u0103n \u0111i\u1ec3m gi\u00fap th\u00ed sinh \u0111\u1ea1t \u0111i\u1ec3m cao. Tuy nhi\u00ean,… <\/p>\n","protected":false},"author":9,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[49,75],"tags":[],"amp_enabled":true,"_links":{"self":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts\/8860"}],"collection":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/users\/9"}],"replies":[{"embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/comments?post=8860"}],"version-history":[{"count":0,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/posts\/8860\/revisions"}],"wp:attachment":[{"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/media?parent=8860"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/categories?post=8860"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/onthitot.com\/wp-json\/wp\/v2\/tags?post=8860"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}