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Lesson 17 of 20 · Problem Solving

Investigationintermediate

Problem Solving — Problem Decomposition

What You'll Learn

Develop your problem decomposition skills with real-world applications and challenges. This investigation builds problem solving abilities step by step, helping you become a stronger, more independent thinker. Why does this matter? Problem Decomposition is a skill that will help you in school, in friendships, and in solving real-world problems. People who master this skill make better decisions and understand the world more clearly. Here's the process: Step 1 — Define the challenge. What exactly are you trying to figure out? Being specific about the question is half the battle. Step 2 — Gather information. What facts do you have? What might be missing? Not all information is equally useful — focus on what's relevant. Step 3 — Consider multiple options. Don't stop at your first idea. Challenge yourself to think of at least three alternatives. Often the best answer is one you didn't think of immediately. Step 4 — Evaluate your options. What are the pros and cons of each? What evidence supports each one? Which option has the strongest reasoning behind it? Step 5 — Make your choice and explain your reasoning. "I think ___ because ___" is the formula. Being able to explain your thinking is just as important as getting the right answer. Step 6 — Reflect. Was your approach effective? What would you do differently next time? This reflection step is how good thinkers become great thinkers.

Key Concept: Problem Decomposition

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Think About This

You're designing a solution to a real problem at school that involves problem decomposition. Walk through your thinking process step by step.

Thinking Steps

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Define

State the problem or question about problem decomposition in your own words. Be specific.

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Investigate

What evidence or information is available? What might be missing?

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Consider Angles

Look at this from at least two perspectives. What would someone who disagrees say?

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Reason It Out

Connect evidence to your conclusion: 'The evidence shows X, which means Y, because Z.'

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Test Your Thinking

Could you be wrong? What evidence would change your mind? Rate your confidence 1-10.

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Reflect & Connect

What thinking skill did you use? How could you apply this to something in your real life?

Key Points

1

Understand problem decomposition

2

Practice problem solving daily

3

Apply thinking skills to real-world situations

Key Vocabulary

Root Cause

The real, underlying reason a problem happens

Iteration

Improving something by trying again and again

Optimization

Making a solution as good as it can be

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Why This Matters in Real Life

The design thinking process used in this lesson is the same process used at companies like Apple, Google, and IDEO to create products used by billions of people.

Talk About It

Discuss these questions with a friend, parent, or classmate.

  • 1Give a real-world example where problem decomposition would help you make a better decision.
  • 2What's the most common mistake people make with this kind of thinking?
  • 3How does this thinking skill connect to other subjects you study in school?
  • 4If you had to teach this to a younger student, what's the ONE thing you'd make sure they understood?

Check Your Understanding

Question 1

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What is the main idea of problem decomposition?