By "method" we mean the means used to get an answer.
This will generally involve one or more Problem Solving Strategies. Although we have listed the Four Stages of Problem Solving in order, for difficult problems it may not be possible to simply move through them consecutively to produce an answer.
Finally, the better students especially, may be able to generalise or extend the problem.
Generalising a problem means creating a problem that has the original problem as a special case. The last part of that problem asks how many towers can be built for any particular height.
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It will almost always be necessary to read a problem several times, both at the start and during working on it.
During the solution process, children may find that they have to look back at the original question from time to time to make sure that they are on the right track.
This exploratory phase will also help them to understand the problem better and may make them aware of some piece of information that they had neglected after the first reading.
Having explored the problem and decided on a plan of attack, the third problem-solving step, solve the problem, can be taken.