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Step 1 – Change your main sprite to a ball
Step 2 – Add the following script to your sprite: 
This tutorial is available as a pdf: How to create a bouncing ball in Scratch
See how to create a Pong game using this code: http://scratch.mit.edu/projects/10128515/#editor
Check this video/animation from Ted Ed to understand what we mean by algothirm and pseudo code.
Source: http://ed.ted.com/lessons/your-brain-can-solve-algorithms-david-j-malan#watch
This tutorial is available as a pdf.
It focuses on how to create a score variable for your game and how to score point when your sprite catches/touches/collides with other sprites.
Download this tutorial as a pdf:
In this tutorial we will get a spaceship to fall from the top to the bottom of the screen.
Add the following code to your sprite (e.g. Spaceship):
To understand this script you need to understand how x and y coordinates work in Scratch.
When using scratch the “playing area” is based on the following grid:
You can download this helpsheet as a pdf: How to create flying or falling objects in Scratch
Step 1 – Create a new variable called “timer”.
Step 2 – Make sure you have two backdrops for your stage (The main background for your game and a Game Over background).
Step 3 – Add the following code to your stage:
You can download this helpsheet as a pdf: How to create a timer in Scratch
… using the arrow keys
Step 1 – Add the following code to your sprite:
Step 2 – If you don’t want your sprite to rotate, click on the blue “i” icon on your sprite. Try these “rotation style” options to find the one you need.
…using the mouse pointerInstead of using the arrow keys you may prefer your sprite to follow your mouse pointer.
To do so add the following code to your sprite:
You can download this helpsheet as a pdf: How to control your sprite in Scratch
Here is a good brainteaser when teaching binary code…
Remember: Computers can only work with binary code.
Computers don’t really like the number 1000 because in binary it’s not that straightforward:
The binary code for 1000 is 1111101000
However computers do like the number 1024 because its binary code is 10000000000.
That’s why there are 1024 Bytes in a KB, 1024 KB in a MB and so on…
Download our HTML Cheat Sheet and use it as a reference when working on all your HTML web projects.
The ASCII code is used to give to each symbol / key from the keyboard a unique number called ASCII code. It can be used to convert text into ASCII code and then into binary code. It can be used within your code to identify specific characters in a string or specific keys being pressed on the keyboard.
The ASCII table contains 256 codes (from 0 to 255). You can download our simplified ASCII table that focuses on the most useful ASCII codes.
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