Module 2: Memory

Official Raspberry Pi Project

This lesson is based on the official Raspberry Pi Foundation project. Open it alongside this guide to access the starter project, step-by-step instructions and community remixes.

How to use it: Click the link above, then click See Inside on the Scratch project to explore the finished version. Use Remix to get your own copy to edit.

What You Will Build

Build a card memory matching game with a variable match tracker.

What You Will Learn

By the end of this project you will be able to:

• Use Events blocks to start scripts and respond to clicks
• Combine Motion, Looks and Sound blocks to create behaviours
• Use variables to track game state and scores
• Apply the specific Scratch concepts introduced in Module 2

You Will Need

Step-by-Step Guide

1. Create 8 pairs of cards (16 total) using sprites with two costumes: front and back.
2. At the start: shuffle positions randomly, show all cards face down.
3. When a card is clicked: flip it face up (switch costume).
4. Track the first and second card clicked using variables.
5. Compare the two cards: if they match, leave them face up and add to score.
6. If they don’t match: wait 1 second, flip both back face down.
7. Count attempts. When all pairs found: show You win in X attempts!
8. Add a timer to create a time-attack mode.
9. Add difficulty levels: easy (4 pairs), medium (8 pairs), hard (16 pairs).
10. Shuffle card positions on each new game using a list.

Extension Challenges

Try these after completing the main project:

• Add themed card sets (animals, flags, shapes) as costume groups.
• Add a multiplayer mode with alternating turns.
• Add card-flip animations using size changes.

Reflection Questions

1. Which Scratch blocks did you use most in this project?
2. What would you add or change if you had more time?
3. How could you reuse the ideas from this project in a different context?

Share Your Work

When your project is complete, click Share in Scratch and post the link to your class or the Techbase community.