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PISA 2012 problem-solving answer to question level 1 (traffic)

 

PROBLEM SOLVING QUESTION (LEVEL 1)
TRAFFIC

The CORRECT answer is either PARK or SILVER.

 

QUESTION LEVEL

At Level 1, students can explore a problem scenario only in a limited way, but tend to do so only when they have encountered very similar situations before. Based on their observations of familiar scenarios, these students are able only to partially describe the behaviour of a simple, everyday device. In general, students at Level 1 can solve straightforward problems provided there is only a simple condition to be satisfied and there are only one or two steps to be performed to reach the goal. Level 1 students tend not to be able to plan ahead or set sub-goals.

 

NATURE OF THE TASK

Evaluate different possibilities using a network diagram to find a meeting point that satisfies a condition on travel times for all three participants in a meeting.

The problem is static i.e. all information is disclosed at the outset. The setting is non-technology because the problem does not involve a technological device and the focus is social because the problem involves the community or society in general.

 

PROBLEM SOLVING PROCESS

The process is monitoring and reflecting because it involves monitoring progress towards the goal at each stage, including checking intermediate and final results, detecting unexpected events, and taking remedial action when required; and reflecting on solutions from different perspectives, critically evaluating assumptions and alternative solutions, identifying the need for additional information or clarification and communicating progress in a suitable manner.

 

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