MethodWorking in a group, use local materials such as soil or flour dough, matchsticks and colour to prepare a model of a water molecule, and then discuss its structure in class.
How to plan itBefore you roll a single ball, decide three things and write them down. How many atoms of each element are in one molecule of water? Which colour will stand for hydrogen and which for oxygen? And should the oxygen ball be the same size as the hydrogen balls, or different, and why?
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