Scratch

Intermediate

45 mins

Teacher/Student led

Learning Goals

Learning Outcomes

Lesson Files

+115 XP

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

Fish Tank Clicker

In this lesson, students will learn how to create an interactive fish tank using Scratch. They will learn how to make a fish sprite follow the mouse pointer, create clones of the fish, and make the clones swim at different speeds and sizes.

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1 Introduction
2 Create a new project
3 Add the Underwater Backdrop
4 Add the Fish Sprite
5 Make the Fish Follow the Mouse
6 Create Clones of the Fish
7 Make the Clones Swim
8 Randomize the Size of the Fish
9 Make the Fish Swim at Different Speeds
10 Wrap Up
Challenge
Quiz

1 - Introduction

In this lesson, you will create a fun and interactive fish tank on your computer.

You will learn how to make a fish follow your mouse pointer and create copies of itself when clicked. These copies, or 'clones', will swim around at different speeds and sizes, just like real fish in a tank. So, are you ready to dive in and start coding your own fish tank? Let's go!

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

👇 Mark your steps as done as you complete them.

+5 XP

3 - Add the Underwater Backdrop

First, go to the backdrop library and select the Underwater 1 backdrop. This sets the scene for our fish tank.

+5 XP

4 - Add the Fish Sprite

Next, add the Fish sprite from the sprite library to your project. This will be the main character of our game.

+5 XP

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This lesson is copyright of 123Learn.ie 2017 - 2026. 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

Fish Tank Clicker

Teacher Class Feed

1 - Introduction

2 - Create a new project

3 - Add the Underwater Backdrop

4 - Add the Fish Sprite

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