Při distanční výuce si žáci doma vyráběli ledovou tříšť nebo zmrzlinu. Nádobu s tekutinou umístili do rozdrcených ledových kostek. Do ledu nasypali sůl, která odebírá teplo a posunuje tání ledu až k -8°C. Tím nám tekutina uvnitř nádobky zmrzne.
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