Scratch Arts

Beginner

30 mins

Teacher/Student led

140 points

What you need:
Chromebook/Laptop/PC or iPad/Tablet

Banana Stamp

In this lesson, students will learn how to create a banana stamp using Scratch. They will learn to control the stamp with their mouse, change its colour and appearance, and clear the canvas.

Learning Goals Learning Outcomes Teacher Notes Lesson Files

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1 Introduction
2 Create a new project
3 Add the Banana sprite
4 Add the Pen extension
5 Make the Banana Follow Your Mouse
6 Stamp the Banana
7 Clear the Canvas
8 Change Colour of the Banana Stamp
9 Change Banana Stamp Appearance
10 Congratulations, You're Done!
Challenge
Quiz

1 - Introduction

In this lesson, you will learn how to create your very own banana stamp using Scratch. You will be able to control the stamp with your mouse, change its colour and even its appearance! Sounds fun, right? Let's get started!

2 - Create a new project

Open the Scratch website and create a new project. Delete the cat sprite from the project.

scratch.mit.edu

Scratch: How to create a new project

Go to the Scratch website using the link below and click on the 'Create' link in the blue bar at the top.

By default, each new project starts with the cat sprite already added. To delete the cat click on the x in the blue circle beside the cat in the sprite list.

https://scratch.mit.edu

5 points

3 - Add the Banana sprite

Start by adding the Banana sprite from the Scratch library to your project.

10 points

4 - Add the Pen extension

To make the stamps of the banana, we need to add a special group of blocks to our project. These blocks are part of the Pen extension.

To add this extension, click on the 'Extensions' button at the bottom left of the Scratch interface. A window will pop up with different extensions. Find and click on the 'Pen' extension. You will see that new blocks have been added to your blocks palette under the category 'Pen'.

Scratch: How to add extension blocks

Understanding and Adding Extensions in Scratch

What are Scratch Extensions?

Scratch Extensions are additional sets of blocks that expand the capabilities of your Scratch projects. They allow you to:

Mention extensions like Pen here
Connect with external hardware (e.g., microbits)
Access web-based services (e.g., Google Translate, Amazon Text to Speech)
Use more advanced programming features

How Extensions Work

When you add an extension to your project:

New blocks appear in the blocks palette
These blocks are grouped under a category named after the extension
You can use these blocks just like any other Scratch blocks

Adding an Extension to Your Project

Look for the "Add Extension" button in the bottom-left corner of the Scratch editor
Click the "Add Extension" button
A window will open showing all available extensions
Browse through the options or use the search bar to find a specific extension
Click on the extension you want to add
The extension is now added to your project, and its blocks appear in the blocks palette

10 points

5 - Make the Banana Follow Your Mouse

Now, we are going to make our banana sprite follow your mouse pointer. This means wherever you move your mouse, the banana will follow!

When we click the green flag, the banana will always ('forever') go to where your mouse pointer is.

Add this code to the banana sprite:

when green flag clicked forever go to (mouse-pointer v)

Now, add this code to your Scratch project, click the green flag and move your mouse around. Your banana should follow your mouse pointer!

15 points

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Copyright Notice
This lesson is copyright of Coding Ireland. Unauthorised use, copying or distribution is not allowed.

Scratch is developed by the Lifelong Kindergarten Group at the MIT Media Lab. It is available for free at https://scratch.mit.edu