It is only a source of information in the same sense as a dictionary or telephone book. It is a place to look for information to respond to what the equations ask for. Let the equation tell you what to look for. Have you students journal use of this for a day. Have them identify situations in which sequential and nested requests were encountered and how responses generated from available information led to results.
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Please comment . A SureMath solution. Copyright 1998, Howard C. McAllister.