Lesson Plan 7
Computer Games
Mathematical Skills / Concepts
Scratch Features
Curricular Links
Problem Solving, Variables, Time
Sensing
Mathematics, Art, Language
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© 2012 - 2013 Lero
18 07 2013 Version 1.02
Learning Objectives
The child will:
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Teacher Tip
Create a game which uses sensing.
Use sensing to effect change in a game.
Introduction
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When you find a game you like
on http://scratch.mit.edu, you
can click on the “See inside”
button to view the scripts and
see how the project was made.
View some of the sample games in Scratch.
On the Scratch website at http://scratch.mit.edu click on Explore and then Games.
Have a discussion with the children about the different games they enjoy playing. Look
at the code in the sample games and chat about how this code could be altered to
make other games.
Maze Game
The touching block under Sensing gives us a true or false response. We can then create scripts
which do different things if the answer is true or false.
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Children will create a game where a sprite moves around a maze, avoiding certain
obstacles.
First we will create a backdrop. Click on the stage and then click on the Paint new
backdrop button. Design a maze using the paint features.
Add a sprite. Adjust the sprite’s size to fit the maze.
Click on one of these
buttons and then
click on your sprite to
shrink or enlarge it.
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Program the sprite to move up, down, left and right.
Remember to click on the sprite in the sprites area before starting your code.
Challenge Time 1!
1. Draw a maze backdrop.
2. Choose a sprite and program it to move around the maze.
3. Ask your friends to play with your maze and give you some feedback.
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Scratch Lesson Plan
Sensing
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If the sprite touches the wall, we want it to return to the start. We will use the touching
block to do this. The walls of this maze are black so we will create a script where, if the
sprite touches the colour black, it must return to the start.
The sprite will start with 5 lives. Each time it hits off the wall, it will lose a life.
The lives decrease by
1 each time the sprite
touches the colour black
i.e. the walls.
Ultimate Challenge!
1.
2.
3.
4.
Draw a maze backdrop.
Choose a sprite and program it to move around the maze.
Give the sprite 5 lives.
Ask your friends to play with your maze and give you some feedback.
Lesson 7
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3
Notes
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Scratch Lesson Plan