Published at Sunday, 13 September 2020. математика класс. By Lacee Brun.
Vy znayete tot moment, kogda sidite na uroke matematiki i nakonets ponimayete, kak reshat zadachi na doske, no nikto drugoy etogo ne ponimayet? Razve vam ne kazhetsya, chto vy na vershine mira ili kak budto Bog ukrasil etot klass vashim prisutstviyem? YA imeyu v vidu davay! Dazhe uchitel vse portit! Eto odno iz samykh luchshikh oshchushcheniy, no eto takzhe odna iz zhertv kiber-shkoly. Davayte posmotrim na obratnuyu storonu moyey pervoy gipoteticheskoy istorii. Vy sidite na uroke matematiki, i uchitel obsuzhdayet chto-to sovershenno novoye, chto vklyuchayet drobi, mnimyye chisla, i ya dumayu, chto tol ko chto uvidel tam malen koye pi. Vy znayete, chto vam nuzhno sosredotochit sya, potomu chto, yesli vy ne poluchite pyaterku po etomu testu, vy libo ne proydete etot kurs, libo vam budet razresheno gulyat s druz yami. No vashi glaza nachinayut medlenno zakryvat sya, i vy nachinayete den mechtat o tom, kak etot milyy novyy student yest pirog. Zvonit zvonok, i ty bystro prosypayesh sya.
Itak, k kakomu optimal nomu balansu dolzhny stremitsya uchitelya pri obuchenii studentov? Na etot vopros budut raznyye otvety v zavisimosti ot izuchayemogo predmeta, poetomu davayte nemnogo suzim krug voprosov. Kakov pravilnyy balans dlya prepodavaniya matematiki starsheklassnikam i kak uznat, slishkom li legkiye uroki ili slishkom slozhnyye? Naskolko prodvinutoy dolzhna byt matematika v starshey shkole? Pri popytke otvetit na etot vopros proshche nachat s matematiki, potomu chto matematika gorazdo boleye poddayotsya kolichestvennoy otsenke, chem drugiye predmety. Khotya byvayet slozhno opredelit, deystvitelno li uchenik znakom s opredelennoy oblastyu istorii i, sledovatelno, dolzhen li on pereyti na sleduyushchiy naiboleye slozhnyy uroven, kogda delo dokhodit do matematiki, nuzhno prosto predstavit ucheniku seriyu problem v etoy oblasti matematiki. Yesli uchenik umeyet pravilno otvetit, znachit, on znayet material. Eto dovolno otkrytaya i zakrytaya situatsiya, kotoraya pozvolyayet legko reshit, nuzhno li studentu prodolzhit rabotu ili nuzhno bolshe vremeni udelyat tekushchey teme.
Vsegda chitayte formuly kak zakonchennyye mysli ili predlozheniya. Formuly vsegda dolzhny imet znak ravenstva. Takim obrazom, formula dlya rasstoyaniya NE rt. Formula dlya rasstoyaniya d = rt. Vsegda proveryayte pravil nost formul. Naprimer: raznitsa dvukh polnykh kvadratov mozhet vyglyadet kak 25-4. Ochevidno, znacheniye etogo chisla ravno 21, no yesli my poluchim eto zhe znacheniye s pomoshchyu formuly, my proverim formulu. Po formule 25-4 mozhno bylo by zapisat kak 5 ^ 2-2 ^ 2 i razlozhit na mnozhiteli kak (5 + 2) (5-2) = 7 (3) = 21. Takim obrazom, formula proverena. Znayte, kak oboznachat otvety po formule i chto oni oznachayut. Bud te konkretny pri chtenii formul. Poskol ku vse formuly ploshchadi nachinayutsya s A =, boleye polezno dobavit dopolnitelnuyu informatsiyu. V A = (pi) r ^ 2 luchshe vsego chitat eto tak: «Ploshchad kruga ravna pi, umnozhennomu na kvadrat radiusa kruga». Obyazatelno pomnite, chto ploshchad vsegda izmeryayetsya v kvadratnykh yedinitsakh.
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