| http://www.w3.org/ns/prov#value | - hat students are familiar with how to use each, for example, some types of scales need to be ???zeroed???, or calibrated to a start point, before measuring.Discuss how accurate each piece of equipment is:Why are some more accurate than others?What kind of thing would you be likely to measure with each?Are any of these measurements exact?How close are they?Some measuring equipment gives a level of
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