Technologies · Foundation

Active learning ideas

Testing and Fixing: Debugging Strategies

Active debugging games help young learners see errors as clues instead of failures. When students physically act out a jumbled recipe or dance routine, they feel the mismatch between intention and outcome, making abstract debugging concrete and memorable.

• ACARA Content Descriptions
• AC9TDEFP04

• 25–40 min
• Pairs → Whole Class
• 4 activities

Activity 01

• Mystery Object
• 30 min · Pairs

Partner Chain: Tower Build Fix

Pairs write 5-step instructions to build a block tower. One partner follows the steps exactly and reports where it fails. They discuss, revise the instructions together, then test the fixed version. Record one change made on a shared chart.

Analyze methods for pinpointing errors within a sequence of instructions.

Facilitation Tip

During Partner Chain: Tower Build Fix, stand nearby to remind partners to speak the steps out loud before moving blocks, reinforcing verbal articulation of the process.

What to look for

Provide students with a simple, two-step instruction card (e.g., '1. Pick up the red block. 2. Put it on the blue block.'). Then, give them a slightly incorrect version (e.g., '1. Pick up the blue block. 2. Put it on the red block.'). Ask students to follow both and identify which one has a 'bug' and explain why.

• Understand
• Analyze
• Evaluate
• Self-Management
• Social Awareness

Activity 02

• Mystery Object
• 40 min · Small Groups

Group Robot: Dance Debug

Teach the class a 6-step robot dance. Introduce one deliberate error, like a wrong turn. Small groups identify the bug through repeated practice, propose fixes, and perform the corrected routine for the class.

Explain the concept of a 'bug' in a program or plan.

Facilitation Tip

During Group Robot: Dance Debug, demonstrate how to pause between moves and ask, ‘What should happen next?’ to train observational pauses.

What to look for

Present a short, illustrated story where a character tries to build something but it goes wrong. Ask students: 'What went wrong in the story? What is a bug in this story? How could we fix the bug so the character's plan works?'

• Understand
• Analyze
• Evaluate
• Self-Management
• Social Awareness

Activity 03

• Stations Rotation
• 35 min · Small Groups

Stations Rotation: Sequence Hunts

Set up stations with jumbled picture sequences for tasks like making a sandwich or threading beads. Students sort steps, test by acting out, and mark errors with sticky notes. Rotate every 7 minutes and compare fixes.

Construct a strategy to break down a problem into smaller, manageable steps for error detection.

Facilitation Tip

During Station Rotation: Sequence Hunts, circulate with a clipboard to note which students naturally re-read instructions versus those who guess without checking.

What to look for

Give each student a card with a picture of a simple robot's path that doesn't reach its goal. Ask them to draw one arrow to change the path and write one sentence explaining the bug they fixed.

• Remember
• Understand
• Apply
• Analyze
• Self-Management
• Relationship Skills

Activity 04

• Mystery Object
• 25 min · Whole Class

Whole Class: Story Bug Fix

Read a simple story with out-of-order events. Class votes on the bug, then reconstructs the sequence on a large chart. Act it out to verify the fix works smoothly.

Analyze methods for pinpointing errors within a sequence of instructions.

Facilitation Tip

During Whole Class: Story Bug Fix, pause after the story to ask students to turn and tell a partner where the ‘bug’ was before any whole-group discussion begins.

What to look for

Provide students with a simple, two-step instruction card (e.g., '1. Pick up the red block. 2. Put it on the blue block.'). Then, give them a slightly incorrect version (e.g., '1. Pick up the blue block. 2. Put it on the red block.'). Ask students to follow both and identify which one has a 'bug' and explain why.

• Understand
• Analyze
• Evaluate
• Self-Management
• Social Awareness

A few notes on teaching this unit

Teach debugging as a mindset first: mistakes are normal and fixable. Model your own thinking aloud when you make an intentional error during a demo, showing how you locate and correct it. Avoid rushing to correct students’ errors for them; instead, guide them to identify the exact step that didn’t match the goal. Research shows that young children benefit from visual and kinesthetic cues when learning to isolate and describe errors in sequences.

Students will test step-by-step instructions, spot mismatches between expected and actual outcomes, and revise with small changes. They will use words like ‘bug,’ ‘fix,’ and ‘test’ naturally while collaborating with peers.

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Watch Out for These Misconceptions

• During Partner Chain: Tower Build Fix, watch for students who dismantle the entire tower when a single block is misplaced.

  Pause the pair and ask, ‘Which block did not go where it was supposed to? Change only that block and test again.’

• During Group Robot: Dance Debug, watch for students who assume the bug is always in the last move.

  Prompt teams to replay the entire dance from the start, pointing to each move and saying what should happen, to locate the first mismatch.

• During Station Rotation: Sequence Hunts, watch for students who skip steps or guess positions without checking instructions.

  Ask them to trace the path with their finger while reading each step aloud, then re-read the original instructions to confirm.

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Methods used in this brief

• Mystery Object
• Stations Rotation