![]() ![]() Wood, paper, apples, petrol and batteries all contain chemical energy. This energy is released by your body when you digest food, and by cars when fuel is burnt. Characteristic #1: A definition of a tier three word is only useful after you have learnt what the word means.Ĭhemical energy is energy stored in substances. In this post I describe some characteristics of tier three science words and recommend three tools for teaching them. ionic bond, inclined plane and chemical store of energy). Many tier three words look like two or more words, but behave like a single word (e.g. fission, chloroplast, ionic bond), or also have a less disciplined life in the outside world (e.g. These are the subject specific words which either belong solely to a subject (e.g. These words are not subject specific and they are every teacher’s responsibility to teach. Tier two words are sophisticated words, not necessarily used at home, but often used in more academic contexts – in a debate, a newspaper article, or a science textbook. Words like: house, cat, climb are tier one. We use tier one words all the time: they don’t need explaining. Beck, McKeown and Kucan in the definitive vocabulary book: Bringing Words to Life (2002) c ategorise vocabulary into tier one, tier two and tier three words. ![]() My post is on the atoms of scientific literacy: words.
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