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# Problem-Solving Models

## Use the Problem Solving plan to solve story problems

Levels are CK-12's student achievement levels.
Basic Students matched to this level have a partial mastery of prerequisite knowledge and skills fundamental for proficient work.
At Grade (Proficient) Students matched to this level have demonstrated competency over challenging subject matter, including subject matter knowledge, application of such knowledge to real-world situations, and analytical skills appropriate to subject matter.
Advanced Students matched to this level are ready for material that requires superior performance and mastery.

## A Problem Solving Plan

Learn the four part problem solving plan and use it to solve real-world problems.
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## Problem Solving Strategies: Guess, Check and Revise; Use Mental Math

Learn the guess, check, and revise problem solving strategy and apply it to real-world problems.
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## Problem-Solving Models

Devise a plan to solve a problem.
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## Understand the Problem-Solving Plan

Learn to understand and use a problem-solving plan.
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