Geometrične mreze - Knjiga projektov: Praktična uvod v tridimenzionalne geometrije z uporabo mrez z navodili
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Geometrijske mreze zagotavljajo veliko ur očarljive zabave! Vsaka mreza predstavlja povrsino edinstvene geometrijske oblike. Nekatere oblike so bile opisane ze pred 2500 leti.
Geometrijska mreza je ploska risba, ki jo je mogoče razrezati in zloziti v tridimenzionalno figuro. Na primer, sest enakih kvadratov je mogoče sestaviti v kocko. To je zato, ker ima kocka sest stranic, od katerih so vse enaki kvadrati. Vsako risbo v tej knjigi je mogoče razrezati in zloziti v tridimenzionalni geometrijski predmet.
Ta knjiga vsebuje 80 geometrijskih mrez, vključno z:
Bipodaljsano tristrana antiprizma
Stozec
Kocka
Kubooktaeder
Valj
Desetstrana antiprizma
Desetstrana prizma
Deltoidni ikozitetraeder
Igralna kocka
Disdiakisni dodekaeder
Pravilni dodekaeder
Podaljsana petstrana kupola
Podaljsana petstrana bipiramida
Podaljsana petstrana piramida
Podaljsana kvadratna bipiramida
Podaljsana kvadratna piramida
Podaljsana trikotni antiprizma
Podaljsana tristrana kupola
Podaljsana tristrana bipiramida
Podaljsana tristrana piramida
Prisekana iz desetstrana piramide
Prisekana stirikotne piramide
Prisekana trikotne piramide
Veliki dodekaeder
Veliki zvezdni dodekaeder
Giro podaljsana petstrana piramida
Giro podaljsana kvadratna bipiramida
Giro podaljsana kvadratna prizma
Giro podaljsana kvadratna piramida
Sedemstrana piramida
Heptaeder 4,4,4,3,3,3,3
Heptaeder 5,5,5,4,4,4,3
Heptaeder 6,6,4, 4,4,3,3
Seststrana prima
Seststrana piramida
Heksaeder 4,4,4,4,3,3
Heksaeder 5,4,4,3,3,3
Heksaeder 5,5,4,4,3,3
Pravilni ikozaeder
Ikozidodekaeder
Posevna kvadratna piramida
Osemstrana antiprizma
Pravilni oktaeder
Petstrana antiprizma
Petstrana kupola
Petstrana bipiramida
Petstrana prizma
Petstrana piramida
Petstrana rotunda
Pentagramska prizma
Pravokotni prizma
Rombični prizma
Rombikubooktaeder
Mala rombidodekaeder
Mali zvezdni dodekaeder
Prirezana kocka
Prirezana dodekaeder
Kvadratna antiprizma
Kvadratna kupola
Kvadratna piramida
Kvadratna trapezoeder
Devetinpetdeset oktaeder
Pravilni Tetraeder
Tetrakisni heksaeder
Triakisni oktaeder
Triakisni tetraeder
Tristrana kupola
Tristrana bipiramida
Tristrana pentaeder
Tristrana prizma
Posevna trikotna piramida
Prisekan kocka
Prisekan kubooktaeder
Prisekan dodekaeder
Prisekan ikozaeder
Ikozidodekaeder
Prisekan oktaeder
Prisekan tetraeder
Pravica petstrana zvezdni piramida
Prisekan kvadratna trapezoeder
McAdams, David E.: -
Po 30 letih razvoja programske opreme je David McAdams iskal nekaj novega. Osredotočil se je na način poučevanja matematike. S svojim predmetom na Utah Valley University se je naučil, kako pomembno je pridobivanje besedisča za vse učenje, se posebej za matematiko. Za matematiko je ze dolgo veljalo, da ima svoj jezik, s svojo sintakso in simboli. Ugotovljeno je bilo, da je usvajanje tega jezika ovira za mnoge studente.
Po zaključku pripravnistva je g. McAdams dokončal zbiranje besed iz matematičnega besedisča v obsezen slovar, napisan za srednjesolce in srednjesolce. "All Math Words Dictionary" je vrhunec desetletnega dela zbiranja, razvrsčanja in opisovanja vseh besed, s katerimi se student lahko sreča pri studiju algebre, geometrije in računa. Ta knjiga ima več kot 3000 vnosov; definiranih več kot 140 zapisov; več kot 790 ilustracij; priročnik za izgovorjavo IPA; in več kot 1400 formul in enačb.
Med delom na slovarju, med igranjem s svojimi vnuki, je g. McAdams začel razvijati druge ideje za matematično opismenjevanje. Rezultati so Numbers (Stevilke), What is Bigger Than Anything (Infinity) (Kaj je večje od vsega (neskončno)), Swing Sets (Set Theory) (Gugalnica (Teória mnozín)) in Learning with Play Money (Učenje z igralnim denarjem).
G. McAdams se je oddaljil od orodij za poučevanje matematike in se preselil v areno čistega matematičnega uzitka. Posledica tega sta dva zvezka My Favorite Fractals (Mojih najljubsih fraktalov).
Medtem ko je svojemu vnuku Sawyerju bral knjigo o imenih barv, je začel razmisljati, kako dolgočasne so knjige o imenih barv za odrasle. "Kaj v naravi," je razmisljal, "ima dovolj primarnih in sekundarnih barv, da bi otroke naučili imen barv?" Njegov prvi odgovor je bil ali zabe ali papige. Ustvaril je "Parrot Colors", "Flower Colours" in "Space Colors".
Če se vrnemo k matematiki, je gospod McAdams ustvaril knjigo, ki se imenuje "Oblike", da bi otrokom pomagala pri učenju oblik. Spomnil se je, kako je v mladosti nasel nekaj izpisov geometrijskih mrez in bil navdusen, kako so se zlozile v kompleksne, tridimenzionalne objekte. Pripravil je "Geometric Nets Project Book", nato "Geometric Nets Mega Project Book" s stevilnimi geometrijskimi mrezami za izrezovanje in sestavljanje.
Kaj lahko dobite za navdusenca matematike, ki ima vse? G. McAdams je ustvaril knjige "Prvi milijon stevk pi", "Prvi milijon stevk e", "Kvadratni koren dveh do enega milijona stevilk", "Prvih sto tisoč prastevil".
Mnogi mladi učenci matematike postanejo navduseni nad tem, kako matematika deluje. G. McAdams je napisal "En peni, dva", da bi skozi zgodbe ponazoril, kako hitro se potencije dvojke povečujejo z vsako ponovitvijo. Jerry dobi čarobno skatlo. Če vanj vlozite peni, se peniji vsak dan podvojijo le, če nobenega ne vzamete ven. Jerry se odloči, da zeli temnozelen sportni kabriolet. Spremljajte Jerryjeve preizkusnje, ko se usmerja k svojemu cilju.
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