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Sikirica, Milan
Kemija u industriji, 01/2021, Volume: 70, Issue: 1-2Journal Article, Paper
U kemiji i nastavi kemije rabe se veličine pikometar i Avogadrov broj. Nastavnici lakoćom izgovore ili napišu, a učenici napamet nauče i reproduciraju te veličine, bez predodžbe o tomu koliko je 10−12 ili 1023. U ovom je radu pokazano kako vlastitom aktivnošću, u ovom slučaju rješavanjem jednostavnih problemskih zadataka iz područja strukturne kemije, učenici mogu samostalno doći do spoznaja o veličini atoma i usporediti ih s veličinama poznatih makro objekata. Time bi se spriječilo učenje napamet o veličinama čestica fundamentalno važnih u području nastave prirodnih znanosti. U ovo digitalno doba uz “nastavu na daljinu” i digitalizirane udžbenike suvremena škola ne treba tiskane udžbenike i “razrede”, već laboratorije i radionice te sportske dvorane i sportske terene gdje će učenici znanja, vještine i sposobnosti stjecati vlastitom aktivnošću. Chemistry teaching uses quantities such as the picometer and Avogadro number. Teachers easily pronounce or write, and students learn to reproduce these quantities by heart, without any idea of how much numbers like 10−12 or 1023 actually are. This paper shows how students can, by solving simple problems, learn independently about the size of atoms and the meaning of Avogadro’s number. In the present digital age, “distance learning” and digitised textbooks, modern school does not need standard “classes” but laboratories, workshops, sports halls, and sports fields, where students could acquire knowledge, skills, and abilities by exerting their activities.
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