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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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Hour of Code: Saloni on the If/Else block

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, Saloni explains what an If/Else statement is and looks at how If/Else blocks can be used to program the movement of a zombie character. This is the fifth of seven clips in ...

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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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Hour of Code: Chris Bosh teaches Repeat Until statements

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. ...

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How to Use Scratch: Making Sprites interactive

Make your Sprite jump, move, say something or change 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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Create your own card game

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 ...

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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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Unplugged Activity: Computational Thinking

This video introduces one of code.org's unplugged activities. It discusses a lesson on Computational Thinking, designed to show you how to take a big difficult problem and turn it into several simpler problems. The goal of the lesson is for a group of students to write a set of instructions for another group of students ...

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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: Adding sounds to your Scratch project

There are all sorts of sounds you could add to your Scratch project. Give your project that extra 'oomph' by adding sounds.

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Hour of Code: Bill Gates explains If statements

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, Bill Gates, creator of Microsoft introduces the If statement. He explains that the If statement is a fundamental concept in computer programming. By demonstrating the use ...

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MathXplosion, Ep 48: The most important thing when solving word problems

It's very important to read problems carefully so you can determine the important facts and understand the questions you are being asked to solve. You may find an answer using pictures and numbers, but if you didn’t answer the right question, what seems right can actually be wrong.

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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 '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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What are IP addresses?

Meet Vint Cerf, the co-creator of the internet! In this clip, Vint and software engineer Paola Mejia explore the way computer networks talk to each other. Find out what an IP address is and why it's similar to a street address. What's the domain name system? And how does your computer find out the IP address of a website ...

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Hour of Code: Mark Zuckerberg teaches Repeat Loops

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 instructional video, Facebook's Mark Zuckerberg explains what a Repeat Loop is and how to use the repeat block. This is the second of seven clips in the Hour of Code tutorial. To ...

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MathXplosion, Ep 47: Creative problem solving

Have you ever had a problem you couldn't solve? Here's an idea: act it out! You can use puppets, objects or people to act out the problem by trying to do what the people or things in your problem do. It will help you because you are actually doing the problem!

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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 ...