The Clue Repair Game

Grade 1 Scratch 3.0 Simulation first | Fixing the Missing Step

📑 Project sections ▾

Simulation lab Build guide Learn & Story Test model Try a challenge Quick check & Quiz

Simulation lab

Tool: Scratch 3.0

⛶ Expand Open Scratch ↗

▶ Green flag ■ ↻

Simulator preview

Follow instruction sequences to guide the character to the goal.

📁 Tools ▴

• Web browser (Chrome, Edge, Firefox)
• Internet connection
• Scratch 3.0 online editor

📖 Learn 🔧 Build </> Code ▷ Test ⚑ Challenge ❓ Quiz

🔧 Build Your Clue Repair Game

1 Open your starter Scratch project to see Kiki the monkey on the stepping stones path.

2 Click the green flag to observe where Kiki stops before reaching the ripe golden mango.

3 Spot the missing movement instruction between stepping stone 2 and stone 3.

4 Drag a 'move (60) steps' block into the script to complete the journey and celebrate!

🧩 Block plan / Starter code ▴

when [green flag] clicked
go to x: (-180) y: (0)
say [Let's find the golden mango!] for (2) seconds
move (60) steps
wait (1) seconds
move (60) steps
wait (1) seconds
move (60) steps   // <-- Missing block we repaired!
say [Yum! Delicious mango!] for (2) seconds

Snap blocks sequentially beneath the 'when green flag clicked' event block.

⚗️ Test your model

Test Condition / Action	Expected Result
Click Green Flag	Kiki resets to starting stone and announces journey
Crossing Stone 2 to 3	Kiki moves smoothly across the repaired gap without halting
Touching the Mango	Kiki speaks the victory message and stays on the goal

⚑ Try a challenge

Add a purple sound block 'play sound [Cheer] until done' right after Kiki reaches the golden mango!

❓ Quick check

Why did Kiki the monkey stop before reaching the ripe golden mango?

• The computer battery was empty
• One movement instruction was missing from the script

Check answer

📖 Our Story & Concepts

Imagine reading a recipe for baking bread, but the page accidentally leaves out the step that says "Add yeast". What happens? The bread will not rise! Computers work in the exact same way. A computer cannot guess what you want; it follows your instructions one by one from top to bottom.

When an instruction is missing, a character in a game might stop moving, walk into a wall, or get stuck mid-air. In computing, finding and fixing these mistakes is called debugging. In this project, you become a digital detective: you watch where the script stops, find the missing clue, and snap the right block into place to guide Kiki home.

</> Full Annotated Code Walkthrough

// Full Annotated Scratch Block Sequence
// 1. Reset Position
when [green flag] clicked
go to x: (-180) y: (0)
say [Let's find the golden mango!] for (2) seconds

// 2. Sequential Movement Steps
move (60) steps
wait (1) seconds

move (60) steps
wait (1) seconds

// 3. The Repaired Missing Instruction
move (60) steps
say [Yum! Delicious mango!] for (2) seconds
play sound [Cheer v] until done

Snap blocks sequentially beneath the 'when green flag clicked' event block.

▷ Expected Results & Troubleshooting

Test Condition / Action	Expected Result
Click Green Flag	Kiki resets to starting stone and announces journey
Crossing Stone 2 to 3	Kiki moves smoothly across the repaired gap without halting
Touching the Mango	Kiki speaks the victory message and stays on the goal

⚑ Extension Challenges & Blueprints

⚑ Extension Challenges

• Level 1: Change the distance in the move blocks from 60 to 80 steps and see what happens to Kiki's jumps.
• Level 2: Add a second character (a baby monkey) that follows 1 step behind Kiki.
• Level 3: Program a reset key: when the 'R' key is pressed, Kiki immediately glides back to the start.

❓ Check Your Understanding

Question 1: Why did Kiki the monkey stop before reaching the ripe golden mango?

• The computer battery was empty
• One movement instruction was missing from the script
• The mango disappeared
• Monkeys do not like fruit

Question 2: What do programmers call a mistake or missing step in computer instructions?

• A bug
• A keyboard
• A biscuit
• A monitor

Question 3: What is the very first block you connect so a Scratch script runs when you click the flag?

• when green flag clicked
• say goodbye for 2 seconds
• delete all sprites
• turn off screen

Question 4: Why is a reset block important in our game?

• It changes the color of the computer desk
• It returns Kiki back to the starting ground every time a new game begins
• It deletes the project forever
• It makes the computer play loud music

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