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BTN: Computer code

Are you interested in finding out about computer coding? Watch this clip to see why some famous faces are promoting the benefits of learning computer programming. See how some young students are learning to code and finding that it's not that hard after all!

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How to Use Scratch: Adding Background Images

Make your project come alive by adding a backdrop - anything from a stage to a snow scene or, just draw your own.

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What skills are important for programming robots?

Listen as David McKinnon from UNSW describes some of the skills that are useful to have if you want to program robots. David explains an activity that exercises problem solving skills. Why don't you try doing it? Look at a map and find some towns that are close to yours. Use the scale on the map to work out the distances ...

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How to Use Scratch: Adding Background Sounds

Record and add your own background sound to your project or choose the sounds from the library like a rattle, a ripple or a pop!

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How to Use Scratch: Intro to Scratch 2.0

Want to make your own games? Scratch is a programming language, created by MIT, that makes it easy to create interactive art, stories, simulations, and games. Explore your ideas and share your creations online.

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How to Use Scratch: Imagining your interactive Holiday Card

Snowmen? Spooky Halloween ghosts? The Easter bilby? What images come to mind when you think of Holidays? Get some ideas for your Scratch Holiday Card

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What are pixels?

Meet Kevin Systrom and Piper Hanson as they explain how digital images work. What are pixels, those tiny dots of light, made from? How are colours created and represented? What does Kevin say about the way mathematical functions are used to create different image filters. What is the difference between image resolution ...

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Learning about computer languages

What happens when you type a web address or url into your computer and press enter? Watch this clip to find out! Computers and servers talk to each other in a language called HTTP. What are the messages they send and recieve mostly about? HTML is another language, one that tells a web browser how to make a web page look. ...

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What makes the internet run reliably?

Watch this clip to see software engineer Lynn Root and co-creator of the internet Vint Cerf explain what keeps the internet running reliably. When information is sent on the internet, it is broken down into packets that are able to take a number of routes to get from one computer to another. Why might this be important? ...

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How computers compute

Watch as Jamie Teherani from MIT, demonstrates how a big, mechanical computer made from wood works. What does it have in common with the high-tech computers of today?

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How to Use Scratch: Making a Sprite say something

You don't want a silent Sprite! Get your Sprite to talk by using the 'say' block.

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How to Use Scratch: Changing the costume of your Sprite

Make your Sprite look its best by learning how to change its costume.

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Unplugged Activity: Graph Paper Programming

This video introduces one of code.org's unplugged activities and provides an introduction to programming without the use of computers. One student takes on the role of "programmer", drawing arrows and scribbles on paper to guide the other student to re-create a particular picture. For more information on the activities ...

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Hour of Code: Introduction

The Hour of Code is a one-hour introduction to computer science, designed to demystify code and show that anybody can learn the basics.  This video explains what computer science is and what a computer programmer does. This is the first of seven clips in the Hour of Code tutorial. To try your hand at coding visit learn.code.org

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How to Use Scratch: Deleting the Cat Sprite

A computer character is called a 'sprite'. Can you delete the cat sprite from your Scratch card?

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How is your personal information kept secret on the internet?

Lots of private data is exchanged over the internet. What are some examples? As Mia Epner explains, cryptography allows for the secure transfer of data online. How does encryption work? And what is a key? Today information is encrypted using 256 bit keys. This keeps information safe because it means there are way too many ...

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How do computers get hacked?

What are some examples of cyber crime? Watch this clip to find out how viruses, denial of service attacks (DDoS) and phishing scams work. What is a botnet? And how are they used by hackers to bring down websites? Most of the time computers get hacked because of simple mistakes users make. What can users do to better protect ...

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How 'binary information' is communicated via the internet

Ever wondered how your photos, emails and messages get sent between devices? Watch as software engineer Tess Winlock explains what binary information is, and how it gets from one place to another. Can you explain what 'bits' are? How about 'bytes'? In the past, binary information was sent using physical systems like semaphore ...

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Telling robots what to do

If you were programming a robot to play a competitive game of soccer, what are some of the things you would consider? Think about some of the most basic functions of a robot, like walking, stopping and turning, to more complicated functions like recognising objects and reacting to them in a specific way.

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How to Use Scratch: Changing Colours of objects in Scratch

Make the images and objects in your project change colour when they are clicked!