WEBVTT 00:00:00.730 --> 00:00:03.457 Nan videyo sa a mwen vle familyarize tèt nou 00:00:03.457 --> 00:00:04.768 ak negatif anpil moun. 00:00:04.768 --> 00:00:07.564 Et aprann tou yon ti kras sou kòmann yo fè nou ajoute Et retire yo. 00:00:07.564 --> 00:00:09.326 Lè ou fèk kontre yo, 00:00:09.326 --> 00:00:11.612 yo sanble nan gwo basen byen fon Et mistik bagay sa a. 00:00:11.612 --> 00:00:14.769 Lè nou fèk konte bagay, nou ap konte moun pozitif. 00:00:14.769 --> 00:00:17.346 Sa fè yon bann negatif menm mechan? 00:00:17.346 --> 00:00:20.835 Men, lè nou panse osijè de sa, ou kapab byen ont rencontré 00:00:20.835 --> 00:00:22.905 numéros negatif nan lavi chak jou ou. 00:00:22.905 --> 00:00:25.195 Et, kite m' sèlman fè ou kèk egzanp. 00:00:25.195 --> 00:00:26.412 Se konsa, anvan sa, m' ap moutre a, jeneral lide an se 00:00:26.412 --> 00:00:30.674 anpil negatif se yon nimewo mwens ke zewo. 00:00:30.674 --> 00:00:34.839 Mwens ke zewo. 00:00:34.839 --> 00:00:37.191 Et si ki sanble lòt Et résumé pou nou la a, 00:00:37.191 --> 00:00:39.851 an n jis panse osijè de li nan yon koup diferan contextes. 00:00:39.851 --> 00:00:45.251 Si mwen gen... Si nou ap mezire tanperati a... 00:00:45.251 --> 00:00:47.114 (e li kapab nan Celsius ou Farenheit, 00:00:47.114 --> 00:00:49.881 Men, Ann èspere jis di nou ap mezire li nan Celsius), 00:00:49.881 --> 00:00:51.878 Se konsa se pou m' fè yon ti kal 00:00:51.878 --> 00:00:53.707 pou nou ka mezire tanperati a sou. 00:00:53.707 --> 00:00:57.099 Se konsa nou di ke sa se 0° Celsius 00:00:57.099 --> 00:01:02.909 sa se 1° Celsius, 2° Celsius, 3° Celsius. 00:01:02.924 --> 00:01:05.817 Koulye a, an n di li se yon jou vrèman fè frèt 00:01:05.817 --> 00:01:10.296 Et, ki aktyèlman 3° Celsius. 00:01:10.296 --> 00:01:12.004 Ak yon moun ki te pwedi a tan kap vini 00:01:12.004 --> 00:01:16.976 di ou ke li pwal gen 4° plus jou kap vini a. 00:01:16.976 --> 00:01:21.502 Se konsa jan frèt pral rive? Ki jan ou kapab repwezante coldness sa? 00:01:21.502 --> 00:01:25.126 Men, si li apèn 1° plus li ta nan 2°, 00:01:25.126 --> 00:01:26.874 Men, nou konnen nou gen pou ale 4° plus. 00:01:26.874 --> 00:01:32.068 Si nou a 2° plus, nou ta gen nan 1°. 00:01:32.068 --> 00:01:35.311 Si nou a 3° plus, nou ta gen nan 0°. 00:01:35.311 --> 00:01:38.453 Men, 3° pa suffisante, nou dwe genyen 4° plus, 00:01:38.453 --> 00:01:43.965 Se konsa nou gen aktyèlman ale yon lòt anba zewo. 00:01:43.965 --> 00:01:50.416 Et sa 1 pi ba pase 0 nou rele sa "1 negatif". 00:01:50.416 --> 00:01:52.907 Se konsa, ou kapab ti jan wè sa liy nimewo 00:01:52.907 --> 00:01:57.029 menm jan ou fè bò dwat la zewo yo ogmante nan valè pozitif, 00:01:57.029 --> 00:02:04.207 menm jan ou al sou bò gòch la zewo ou pwal gen-1,-2,-3. 00:02:04.207 --> 00:02:07.301 Et, ou pral fè en fonction sou kijan ou panse osijè de li- 00:02:07.301 --> 00:02:09.948 ou pral fè gen pi gwo nimewo negatif. 00:02:09.948 --> 00:02:15.372 Men, mwen vle fè sa trè klè:-3, ki se MWENS ke-1. 00:02:15.372 --> 00:02:19.488 Pa gen mwens chalè nan lè a nan-3 ° pase nan-1 °. 00:02:19.488 --> 00:02:23.329 Li plus---pa gen mwens tanperati. 00:02:23.329 --> 00:02:39.824 Se pou m' sèlman fè li trè klè:-100 pi piti anpil pase-1. 00:02:39.824 --> 00:02:41.913 Ou ka chèche nan 100 Et ou te ka gade nan 1 Et 00:02:41.913 --> 00:02:45.094 reyaksyon wo sak trip ou peut être 100 pi gwo pase 1. 00:02:45.094 --> 00:02:46.272 Men, lè ou panse osijè de sa, 00:02:46.272 --> 00:02:48.849 -100 vle di pa gen yon mank de yon bagay. 00:02:48.849 --> 00:02:52.304 -100: Si se-100 ° pa gen yon mank de solèy. 00:02:52.304 --> 00:02:55.737 Se konsa pa gen pi rèd chalè isit la pase si nou te gen-1 °. 00:02:55.737 --> 00:02:57.493 Kite m ba ou yon lòt egzanp. 00:02:57.493 --> 00:03:11.264 An n di nan kont labank m' jòdi a mwen gen $10. 00:03:11.264 --> 00:03:13.114 Koulye a, an n di mwen ale la 00:03:13.114 --> 00:03:14.949 (paske m santi m byen osijè de m $10), 00:03:14.949 --> 00:03:21.426 Et, an n di mwen ale, pase $30. 00:03:21.426 --> 00:03:22.735 Et, for the sake of chire pit 00:03:22.735 --> 00:03:24.275 an n di mwen gen yon bank anpil likid 00:03:24.275 --> 00:03:26.861 Lè sa a, yonn pou m ' depanse plis lajan mwen gen 00:03:26.861 --> 00:03:28.354 (Et sa yo aktyèlman ekziste!). 00:03:28.354 --> 00:03:30.422 Se konsa, mwen pase $30. 00:03:30.422 --> 00:03:32.907 Se konsa m' kont anbank sak sanble? 00:03:32.907 --> 00:03:35.564 Se pou m' trase yon liy nimewo isit la. 00:03:35.564 --> 00:03:37.839 Apre sa, nou ka deja gen yon repons intuitive: 00:03:37.839 --> 00:03:43.284 Mwen pral dwe bank la yon lajan. 00:03:43.284 --> 00:03:47.130 Denmen, ki sa ki kont labank m? 00:03:47.130 --> 00:03:51.642 Nou te imedyatman di: "si m gen $10 Et mwen pase $30, 00:03:51.642 --> 00:03:54.219 pa gen $20 sa yo te gen pou leve soti yon kote." 00:03:54.219 --> 00:03:56.489 Et sa $20 ap soti nan bank lan. 00:03:56.489 --> 00:03:59.119 Se konsa mwen pral dwe $20, bank lan. 00:03:59.119 --> 00:04:00.789 Poutèt sa, m' kont anbank, nan 00:04:00.789 --> 00:04:07.199 pou montre konbyen m, mwen te kapab di $10 - $30-$20. 00:04:07.199 --> 00:04:13.345 Se konsa nan kont bank mwen denmen, mwen pral gen-$20. 00:04:13.345 --> 00:04:18.075 Se konsa, si mwen di: mwen gen-$20, sa vle di mwen dwe bank lan. 00:04:18.075 --> 00:04:19.357 ---Mwen pa bezwen sa. 00:04:19.357 --> 00:04:20.946 Se pa sa sèlman, èske mwen pa gen anyen, mwen pa dwe yon bagay. 00:04:20.946 --> 00:04:22.535 Li pwal nan inverse. 00:04:22.535 --> 00:04:25.589 Isit la, mwen gen yon bagay ase... 00:04:25.589 --> 00:04:29.228 Si m $10 nan kont labank m' vle di nan bank lan fè prete m $10. 00:04:29.228 --> 00:04:31.817 M fè $10 sa mwen ka itilize pou ale pase. / kè m boule m. 00:04:31.817 --> 00:04:33.390 Koulye a, tout de yon soudaine mwen dwe bank lan. 00:04:33.390 --> 00:04:34.963 Mwen te al lòt bò. 00:04:34.963 --> 00:04:36.778 Si nou itilize yon liy nimewo isit la 00:04:36.778 --> 00:04:38.593 li ta dwe fè, plis konprann. 00:04:38.593 --> 00:04:39.832 Se poutèt sa se 0. 00:04:39.832 --> 00:04:43.347 M ap konmanse ak $10, 00:04:43.347 --> 00:04:47.417 Et depans $30 vle di m ap fè mache 30 sou bò gòch. 00:04:47.417 --> 00:04:49.848 Si mwen jwe 10 mache sou bò gòch--- 00:04:49.848 --> 00:04:52.804 Si mwen sèlman pase $10 m ap tounen nan $0. 00:04:52.804 --> 00:04:56.829 Si mwen pase yon lòt $10, m' ap fè nan-$10. 00:04:56.829 --> 00:05:02.208 Si mwen pase yon lòt $10 Apre sa, m' ap nan-$20. 00:05:02.208 --> 00:05:04.483 Se konsa, chak de distans sa yo, m' ap pase $10 mwen ki pwal nan $0. 00:05:04.483 --> 00:05:06.759 Yon lòt $10 mwen ki pwal nan-$10. 00:05:06.759 --> 00:05:09.754 Yon lòt $10 mwen ki pwal nan-$20. 00:05:09.754 --> 00:05:13.144 Se poutèt sa a an antye distans isit la se konbyen mwen te pase. 00:05:13.144 --> 00:05:17.270 Mwen te pase $30. 00:05:17.270 --> 00:05:20.398 Se konsa lide jeneral an lè ou pase, ou si ou retire, 00:05:20.398 --> 00:05:23.327 ou obtenir plus, ou ta deplase pou sou bò gòch. 00:05:23.327 --> 00:05:24.803 Anpil moun la ta gen pi piti. 00:05:24.803 --> 00:05:27.229 E nou konnen koulye a yo ka jwenn menm pi piti 0. 00:05:27.229 --> 00:05:31.604 Yo kapab ale pou-1,-2---yo ka menm al pou-1.5,-1.6. 00:05:31.604 --> 00:05:34.948 La pi byen toujou negatif, plis ou pèdi. 00:05:34.948 --> 00:05:37.268 Si ou gen ajout, si mwen ale, pran m' lajan taks sou chèk 00:05:37.268 --> 00:05:41.389 Mwen pral fè mouvman pou dwa liy nimewo a. 00:05:41.389 --> 00:05:43.058 Koulye a, ak pye, sa 00:05:43.058 --> 00:05:46.082 an n jis fè kèk plis nan matematik pwoblèm. 00:05:46.082 --> 00:05:52.317 Kisa sa vle di, si nou te gen pou di... 00:05:52.317 --> 00:05:56.474 An n pale, 3-4. 00:05:56.474 --> 00:05:57.710 Se konsa yon fwa ankò, 00:05:57.710 --> 00:06:00.193 sa se exactement sitiyasyon nou te fè ak tanperati a. 00:06:00.193 --> 00:06:01.944 Nou ap konmanse ak 3 Et nou ap soustrayant 4, 00:06:01.944 --> 00:06:03.695 Se poutèt sa, nou pral pou yo avanse 4 sou bò gòch. 00:06:03.695 --> 00:06:05.854 Nou ale 1, 2, 3, 4. 00:06:05.854 --> 00:06:10.417 Ki jwenn nou pou-1. 00:06:10.417 --> 00:06:11.767 Lè ou konmanse fè sa 00:06:11.767 --> 00:06:13.934 ou vrèman konprann ki yon negatif nimewo mwayen. 00:06:13.934 --> 00:06:15.843 Mwen reyèlman ankouraje w visualiser liy nimewo a 00:06:15.843 --> 00:06:17.752 Et vrèman deplase nan men l' sou en 00:06:17.752 --> 00:06:19.961 èske ou gen ajout ou soustrayant. 00:06:19.961 --> 00:06:21.236 An n fè kèk ankò. 00:06:21.236 --> 00:06:27.848 An n di mwen gen 2-8 00:06:27.848 --> 00:06:30.552 (e nou ap panse osijè de lòt fason pou fè sa a nan pwochen vidéos), 00:06:30.552 --> 00:06:33.612 Men, yon fwa ankò, ou jis vle fè liy nimewo a. 00:06:33.612 --> 00:06:35.083 Ou gen yon 0 isit la. 00:06:35.083 --> 00:06:38.729 Nan (kite m' trase espacement a yon ti kras). 00:06:38.729 --> 00:06:42.032 Nou gen 0 isit la... nan 1... 2. 00:06:42.032 --> 00:06:43.891 Si nou gen soustrayant 8, 00:06:43.891 --> 00:06:47.043 sa vle di nou pwal pou yo avanse 8 sou bò gòch. 00:06:47.043 --> 00:06:50.993 Se konsa nou pral fè bò gòch, 2 sou bò gòch 1. 00:06:50.993 --> 00:06:53.036 Se konsa, nou te ale 2 sou bò gòch pou ale 0. 00:06:53.036 --> 00:06:55.080 Nou gen pou yo avanse ki kantite ankò sou bò gòch? 00:06:55.080 --> 00:06:56.961 Nou deja te deplase 2 sou bò gòch, 00:06:56.961 --> 00:06:59.010 pou jwenn pou 8, nou gen pou yo avanse 6 plis sou bò gòch. 00:06:59.010 --> 00:07:07.396 Se konsa nou pral gen pou yo avanse 1-2-3-4-5-6 ankò sou bò gòch. 00:07:07.396 --> 00:07:09.106 Men, kote sa pwal fè nou? 00:07:09.106 --> 00:07:10.074 Men, nou te nan 0. 00:07:10.074 --> 00:07:18.706 Sa se-1,-2,-3,-4,-5,-6. 00:07:18.706 --> 00:07:24.310 Se konsa, 2-8 se-6. 00:07:24.310 --> 00:07:26.540 2-2 ki ta 0. 00:07:26.540 --> 00:07:29.633 Lè w ap soustrayant 8 ou ap soustrayant 6 yon lòt. 00:07:29.633 --> 00:07:33.366 Se konsa nou ale nan-6, nou pase 6 pi ba pase 0. 00:07:33.366 --> 00:07:34.994 Pou m' fè youn nan ekzanp plis. 00:07:34.994 --> 00:07:36.562 (Et sa a pral yon ti kras mwens classiques 00:07:36.562 --> 00:07:38.807 Men, li pral fè sans). 00:07:38.807 --> 00:07:43.976 Ann pran... (e mwen pwal fè sa nan yon nouvo koulè)... 00:07:43.976 --> 00:07:47.870 Kite m' wete-4-2. 00:07:47.870 --> 00:07:49.439 Se konsa nou ap kòmanse nan anpil negatif 00:07:49.439 --> 00:07:51.009 Apre sa, lè sa a nou ap soustrayant pou sa. 00:07:51.009 --> 00:07:56.808 Koulye a, si sa semble ki pa klè jis sonje liy nimewo a! 00:07:56.838 --> 00:07:59.680 Se poutèt sa se isit-0. 00:07:59.680 --> 00:08:07.015 Sa se-1,-2,-3,-4. Se konsa, sa se kote nou ap kòmanse. 00:08:07.015 --> 00:08:09.279 Kounye a nou pwal retire 2 de-4, 00:08:09.279 --> 00:08:11.543 Se poutèt sa, nou pral pou yo avanse 2 sou bò gòch. 00:08:11.543 --> 00:08:15.387 Se konsa, si nou retire 1 nou ap fè nan-5. 00:08:15.387 --> 00:08:21.723 Si nou retire yon lòt 1 nou pwal gen nan-6. 00:08:21.723 --> 00:08:23.332 Se poutèt sa se-6. 00:08:23.332 --> 00:08:24.748 An n fè yon lòt bagay enteresan. 00:08:24.748 --> 00:08:30.266 An n kòmanse nan-3... Ann di nou gen-3. 00:08:30.266 --> 00:08:34.261 Olye ke yo soustrayant yon bagay sòti de sa, an n ajoute 2. 00:08:34.261 --> 00:08:36.562 Se konsa kote ta sa a mete nou sou liy nimewo a? 00:08:36.562 --> 00:08:39.389 Se konsa nou ap kòmanse nan-3 e nou ap ajout 2. 00:08:39.389 --> 00:08:42.217 Se konsa nou pwal deplase pou dwa. 00:08:42.217 --> 00:08:44.750 Se konsa, ou ajoute 1, ou vin-2 00:08:44.750 --> 00:08:46.760 Men, si ou ajoute yon lòt 1 (sa nou dwe fè), 00:08:46.760 --> 00:08:47.969 ou vin-1. 00:08:47.969 --> 00:08:49.394 Ou fè mouvman 2 pou dwa. 00:08:49.394 --> 00:08:54.395 Se konsa,-3 plis pase 2 se-1. 00:08:54.395 --> 00:08:55.957 Et, ou kapab wè pou ou menm, 00:08:55.957 --> 00:08:59.934 tout sa a pi byen chita sou nou tradisyonèl nosyon de ajout Et soustrayant. 00:08:59.934 --> 00:09:05.399 Si nou kòmanse nan-1 epi nou retire 2, nou ta dwe jwenn-3. 00:09:05.399 --> 00:09:07.506 Ti jan de bagay sa a la anwo inverse. 00:09:07.506 --> 00:09:09.637 -3 plis pase 2 obtient nou la. 00:09:09.637 --> 00:09:11.229 Et si nou kòmanse la ak nou retire 2 00:09:11.229 --> 00:09:12.514 nou ta dwe tounen pou-3. 00:09:12.514 --> 00:09:13.429 Apre sa, nou wè sa. 00:09:13.429 --> 00:09:17.634 Si ou konmanse nan-1, droit sou isit la, 00:09:17.634 --> 00:09:20.469 Apre sa, ou retire 2, ou jwe 2 sou bò gòch. 00:09:20.469 --> 00:09:22.106 Ou fin tounen-3. 00:09:22.106 --> 00:09:25.322 Se konsa, sa commence ba ou yon sans de sa sa vle di 00:09:25.322 --> 00:09:29.028 pou kontra avèk ou ajoute Et retire negatif anpil moun. 00:09:29.028 --> 00:09:31.337 Men, nou pwal bay anpil ekzanp yo nan videyo kap vini an. 00:09:31.337 --> 00:09:32.475 E nou aktyèlman pral wè kisa sa vle di 00:09:32.475 --> 00:09:35.337 pou retire negatif anpil.