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• TLF-IDA003036

This video is the first of a series of 5 explainers on artificial intelligence. It discusses why it is a challenge for a computer to easily recognise one object from another. Discover how a machine learns using labelled images rather than following a specific set of rules and how AI connects with human learning.

• TLF-IDM018463

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

• TLF-IDM018932

The Hour of Code is a one-hour introduction to computer science, designed to demystify code and show that anybody can learn the basics. In this video, basketball star Chris Bosh explains the difference between a Repeat Until command and a Repeat Loop command. This is the third of seven clips in the Hour of Code tutorial. ...

• TLF-IDM021122

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?

• TLF-IDM021133

Grab a deck of cards and a bunch of friends and create your own card game. What sort of rules will you decide on? Get a pen and some paper out and brainstorm some possibilities. You might decide on something like 'If I draw a red card, I get a point' and 'If I draw a black card, you get a point.' What other rules can you ...

• TLF-IDM018933

Do you know what a computer programmer does? Watch as some experts in the field explain. For more information on the activities introduced in this video, visit http://learn.code.org/s/1/level/1

• TLF-IDM024993

Find three cups, place them in a line and turn one cup facing down. Can you get all three cups facing down after making exactly three moves? The one rule is: for every move, two cups must be flipped simultaneously. Since the goal is to get all three cups facing down (an odd number) and you start with one cup facing down ...

• TLF-IDM020272

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 ...

• TLF-IDM020585

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 ...

• TLF-IDM020595

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 ...