Published at Wednesday, January 20th 2021. by Georgitte Lebrun in математика класс.
Ispol zuyte standartnuyu kolodu kart (Tuz-Korol). Sygrayte v lyubuyu traditsionnuyu kartochnuyu igru, no zastavte uchenika chto-nibud delat s chislami. Yesli eto igra so sbrosom, oni dobavlyayut ili umnozhayut sbroshennuyu kartu na uzhe imeyushchuyusya. Yesli eto tot, gde vy stavite tri odinakovykh ili tri v posledovatel nosti vniz, vam nuzhno chto-to sdelat s nimi, slozhit vse, slozhit pervyye dva, vychest sleduyushcheye. Nazovite vse faktory, ispolzuya chisla i tak daleye. Ispolzuyte standartnuyu kolodu (tolko A-9) dlya opredeleniya stoimosti. U nikh yest svoi kolody kart, pozvonite po nomeru, posmotrite, skolko vremeni im potrebuyetsya, chtoby nayti chisla i poluchit ikh v pravilnom poryadke. Karty lits mogut byt zapyatymi.
Odnoy iz nepriyatnykh problem dlya mnogikh studentov-matematikov yavlyayetsya tot fakt, chto vse klassy matematiki v starshikh klassakh zavisyat ot formuly. Nekotorym uchenikam slozhno zapominat formuly. Drugiye uchashchiyesya mogut bez truda zapominat formuly, no ne ponimayut, kak polzovatsya formuloy, ili ne ponimayut, chto oznachayet rezultat formuly. Yesli vy popadayete v lyubuyu iz etikh kategoriy, togda budet slozhno dobitsya uspekha v klasse matematiki. K schastyu, yest neskolko sovetov i priyemov, kotoryye mogut pomoch. Formuly delyatsya na dve osnovnyye kategorii: 1) Vychislitelnyye navyki. Eto tip formul, naiboleye chasto vstrechayushchiysya v algebre, i yego osobenno trudno ponyat, potomu chto simvoly chasto ne imeyut znacheniya. Zapomnit, chto a ^ 2 - b ^ 2 = (a + b) (a - b) mozhet bytlegko, no eto mozhet ne imet dlya vas absolyutno nikakogo znacheniya i, sledovatelno, ne budet imet dlya vas osoboy tsennosti. Tekhniki, kotoryye my obsudim, osobenno vazhny dlya etogo tipa formul. 2) Ochevidnoye primeneniye v realnoy zhizni. Oni chashche vstrechayutsya v geometrii i trigonometrii. Ikh legche ponyat, no metody takzhe mogut pomoch v etom.
No chto, chert voz mi, proizoydet, yesli vy ne poymete, kak reshat matematicheskuyu zadachu v kibershkole? Yesli vy s pervogo raza ne poymete, chemu vas pytayetsya nauchit urok matematiki, eto mozhet stat ochen trudnym dlya ponimaniya. Vy mozhete prochitat urok 100 raz podryad i vse ravno ne ponyat, chto oni pytayutsya zastavit vas sdelat. I chto teper? Chto zh, vy vsegda mozhete poprobovat nayti drugoy veb-sayt s pomoshchyu Google, kotoryy ob"yasnyayet urok po-drugomu. Eto mozhet sil no sbit s tolku, yesli vy nedostatochno znayete ob uroke, chtoby nayti to, chto nuzhno, potomu chto vo mnogikh mestakh ispol zuyetsya drugoy slovarnyy zapas. Vy takzhe mozhete iskat video na YouTube, no togda vy stalkivayetes s toy zhe problemoy.
Pora vozvrashchat sya v shkolu! Yesli vy uchenik starshey shkoly, to v etom godu vy, veroyatno, budete poseshchat uroki matematiki. A zanyatiya matematikoy obychno oznachayut, chto vam nuzhen kal kulyator. Pri pokupke kal kulyatora vy zakhotite prinyat vo vnimaniye ryad faktorov, vklyuchaya tsenu, funktsional nost, udobstvo ispol zovaniya i, vozmozhno, trebovaniya vashego uchitelya. Odnako vy takzhe dolzhny ubeditsya, chto prinyali vo vnimaniye yeshche odin vazhnyy faktor - standartizovannyye testy.
Vo-pervykh, sovershenno yestestvenno imet problemy so snom v noch pered vazhnym dnem, i vypusknoy ekzamen po matematike yavlyayetsya imenno to, chto ochen vazhno dlya uspekha v zhizni. Teper vy mozhete pochuvstvovat sebya luchshe, yesli ne spite vsyu noch i budete uchit sya, i vy budete govorit sebe, chto deystvitelno uchites i sobirayetes proyti etot test, no realnost takova, chto vy s bolshey veroyatnostyu spravites khuzhe, yesli vam ne khvatit sosredotochitsya i delat glupyye oshibki, iz-za kotorykh vy propuskayete otvety.
Veroyatno, luchshiy sposob vyuchit formuly - eto delat kartochki po mere znakomstva s novymi formulami. Sdelayte 2 nabora kartochek. Pervyy nabor dolzhen imet nazvaniye formuly s odnoy storony - Ploshchad treugol nika - i polnuyu formulu s drugoy storony - A = 1/2 b h. Vtoroy nabor kartochek dolzhen imet formulu na odnoy storone - A = 1/2 b h - s formulirovkoy formuly na drugoy storone - Ploshchad treugol nika ravna polovine proizvedeniya osnovaniye umnozheno na vysotu treugol nika. Pri rabote s flesh-kartami: poprosite kogo-nibud porabotat s vami, rabotayte tolko okolo 10 minut za raz, no delayte neskolko podkhodov v den, poka vse ne zapomnitsya i ne stanet osmyslennym. Poslednyaya mysl: ne prosto izuchayte populyarnyye formuly - VYUCHITE IKH VSE!
Poymite, chto naiboleye vazhnoye znacheniye formul sostoit v tom, chto oni konstatiruyut otnosheniya, kotoryye sushchestvuyut vsegda - VSEGDA ISTINNY. Eto oznachayet, chto oni VSEGDA mogut pomoch vam! Odnako, chtoby formuly pomogli vam, oni dolzhny imet dlya vas znacheniye. Vychislitelnyye formuly trebuyut znachitelno bolshe usiliy dlya sozdaniya etogo znacheniya. My podrobno obsudim eto v № 3. Zapominayte formuly po mere ikh poyavleniya. Vy mozhete sdelat domashneye zadaniye, prosto vzglyanuv na formulu, no ne zhdite nochi pered ekzamenom, chtoby popytatsya zapomnit mnogiye formuly. Rabota s formulami po mere ikh postupleniya i nemedlennoye sokhraneniye ikh v dolgovremennoy pamyati garantiruyet, chto eta informatsiya budet usvoyena navsegda, a ne tolko dlya testa.
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