Why computational thinking is a life skill in Intro to Computing - Draw It to Prove It

Draw This - beginner

Draw a flowchart that shows how computational thinking helps solve a daily life problem: planning a grocery shopping list based on what is needed at home and the budget available.

10 minutes

Hint 1

Hint 2

Hint 3

Hint 4

Grading Criteria

Start and End symbols present

Process steps clearly labeled

Decision diamonds used for budget checks

Flow correctly shows looping to adjust list

Logical order of steps from problem to solution

Solution

  _________
 | Start   |
 |_________|
      |
      v
  ______________________
 | Check items at home   |
 |______________________|
      |
      v
  ______________________
 | List needed items     |
 |______________________|
      |
      v
  ______________________
 | Estimate total cost   |
 |______________________|
      |
      v
  _____________
 | Is cost <=   |
 | budget?     |
 | (Decision)  |
 |_____________|
    /     \
  Yes      No
  /         \
 v           v
_________  ______________________
| Final  | | Remove least needed  |
| list   | | item from list       |
|________| |______________________|
              |
              v
         ______________________
        | Estimate new cost     |
        |______________________|
              |
              v
         _____________
        | Is cost <=   |
        | budget?     |
        | (Decision)  |
        |_____________|
          /     \
        Yes      No
        /         \
       v           v
  _________    (Repeat removing items)
 | End     |
 |_________|

This flowchart starts with checking what items are already at home to avoid buying duplicates. Then, it lists the needed items and estimates the total cost. A decision checks if the total cost fits the budget. If yes, the final list is ready. If not, the least needed item is removed, and the cost is re-estimated. This repeats until the list fits the budget. This process shows computational thinking by breaking down the problem, making decisions, and iterating to find a solution that works in real life.

Variations - 2 Challenges

[intermediate] Draw a flowchart for planning a daily schedule using computational thinking: include tasks, time estimates, and breaks.

[advanced] Draw a flowchart to solve the problem of choosing the best route to work considering traffic and time using computational thinking.

Practice

1. What is the main benefit of computational thinking in everyday life?

easy

A. It teaches you how to write complex computer code.

B. It helps break problems into smaller, manageable steps.

C. It allows you to memorize facts quickly.

D. It replaces the need to think creatively.

Solution

1. Step 1: Understand the purpose of computational thinking

   Computational thinking is about breaking down problems into smaller steps to solve them easily.

2. Step 2: Compare options with this purpose

   Only It helps break problems into smaller, manageable steps. describes breaking problems into smaller steps, which matches the main benefit.

3. Final Answer:

   It helps break problems into smaller, manageable steps. -> Option B

4. Quick Check:

   Breaking problems into steps = A [OK]

Hint: Focus on breaking problems into steps for life skills [OK]

Common Mistakes:

• Thinking computational thinking is only about coding
• Confusing memorization with problem solving
• Assuming it removes creativity

2. Which of the following is the correct way to describe computational thinking?

easy

A. A technique to memorize computer commands.

B. A way to write long paragraphs quickly.

C. A process to avoid solving problems.

D. A method to solve problems by breaking them down into steps.

Solution

1. Step 1: Identify the definition of computational thinking

   Computational thinking means solving problems by breaking them into smaller steps.

2. Step 2: Match options to this definition

   A method to solve problems by breaking them down into steps. matches perfectly; others describe unrelated ideas.

3. Final Answer:

   A method to solve problems by breaking them down into steps. -> Option D

4. Quick Check:

   Definition matches A method to solve problems by breaking them down into steps. [OK]

Hint: Look for problem-solving by steps description [OK]

Common Mistakes:

• Choosing options about memorization or writing
• Confusing computational thinking with typing skills

3. Consider this flowchart for solving a problem using computational thinking:



What is the correct order of steps in computational thinking?

medium

A. Understand problem -> Break into steps -> Solve each step -> Combine results -> Done

B. Solve each step -> Understand problem -> Combine results -> Break into steps -> Done

C. Combine results -> Break into steps -> Understand problem -> Solve each step -> Done

D. Done -> Understand problem -> Break into steps -> Solve each step -> Combine results

Solution

1. Step 1: Analyze the flowchart steps

   The flowchart shows a logical order: first understand the problem, then break it down, solve parts, combine results, and finish.

2. Step 2: Match options to this order

   Only Understand problem -> Break into steps -> Solve each step -> Combine results -> Done matches the flowchart's correct sequence.

3. Final Answer:

   Understand problem -> Break into steps -> Solve each step -> Combine results -> Done -> Option A

4. Quick Check:

   Correct step order = A [OK]

Hint: Follow logical problem-solving order in flowcharts [OK]

Common Mistakes:

• Mixing up the order of steps
• Ignoring the 'understand problem' first
• Skipping combining results

4. A student tries to solve a problem by jumping directly to the solution without breaking it into smaller steps. What is the main issue with this approach?

medium

A. It may cause confusion and mistakes because the problem isn't clearly understood.

B. It saves time and is the best way to solve problems.

C. It shows excellent computational thinking skills.

D. It means the problem is too easy to solve.

Solution

1. Step 1: Understand the role of breaking problems into steps

   Breaking problems into smaller parts helps understand and solve them clearly.

2. Step 2: Identify the problem with skipping this step

   Jumping directly can cause confusion and errors because the problem isn't fully understood.

3. Final Answer:

   It may cause confusion and mistakes because the problem isn't clearly understood. -> Option A

4. Quick Check:

   Skipping steps causes confusion = B [OK]

Hint: Always break problems down before solving [OK]

Common Mistakes:

• Thinking skipping steps saves time
• Assuming skipping steps shows skill
• Believing all problems are easy

5. You want to plan a trip with friends using computational thinking. Which of these steps best shows applying computational thinking to this real-life problem?

hard

A. Ignore the trip details and just focus on the destination.

B. Decide to go without any plan and figure things out on the way.

C. List all tasks like booking tickets, packing bags, and planning routes separately, then complete each.

D. Ask one friend to do everything without sharing tasks.

Solution

1. Step 1: Identify how computational thinking applies to planning

   Computational thinking means breaking a big task into smaller tasks and solving each step clearly.

2. Step 2: Evaluate options for applying this idea

   List all tasks like booking tickets, packing bags, and planning routes separately, then complete each. breaks the trip into tasks and plans each, matching computational thinking. Others ignore planning or teamwork.

3. Final Answer:

   List all tasks like booking tickets, packing bags, and planning routes separately, then complete each. -> Option C

4. Quick Check:

   Breaking tasks down = D [OK]

Hint: Break big tasks into smaller ones for clear planning [OK]

Common Mistakes:

• Skipping planning steps
• Relying on one person for all tasks
• Ignoring details and focusing only on the goal