Debug Detective Worksheet

Name:

Date:

🔍 Part 1: Find the Bug

Read the algorithm below (it has mistakes):

Steps to make a peanut butter & jelly sandwich (flawed):

1. Put peanut butter on one slice of bread.

2. Close sandwich.

3. Spread jelly on a slice of bread.

4. Get two slices of bread.

5. Cut sandwich in half.

1. Which step should happen first?

Step 1: Put peanut butter on one slice

Step 2: Close sandwich

Step 3: Spread jelly on a slice

Step 4: Get two slices of bread

2. Which step is clearly out of place?

Step 2: Close sandwich

Step 5: Cut sandwich in half

Step 1: Put peanut butter

Step 3: Spread jelly

3. Check all problems you notice in this algorithm:

Steps are out of order

A step to get bread is missing

Close sandwich before adding both spreads

No step telling you to wash hands or use a knife safely

✏️ Part 2: Fix & Explain

4. Rewrite the corrected algorithm in order. Use short steps (number each step):

5. Match each fix to the reason it is needed.

A. Move "Get two slices of bread" to step 1

B. Move "Spread jelly" so it comes after peanut butter

C. Move "Close sandwich" to after both spreads are added

D. Add "Wash hands and use a knife safely"

1. Ensures spreads go on bread that is ready

2. Keeps sandwich from closing too early and trapping one spread

3. Safety and cleanliness before food preparation

4. Keeps peanut butter and jelly from being placed on separate pieces incorrectly

6. Explain in 1–2 sentences: Why is it important to test the corrected algorithm after fixing it?

7. Reflection — In one word, what does "debugging" feel like to you? Why? (1 sentence)

Debug Detective Worksheet

Debug Detective Worksheet

🔍 Part 1: Find the Bug

✏️ Part 2: Fix & Explain

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