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For the Juniors: Balance is a matter of ballast

Have you seen large ships that carry shipping containers as cargo? In this clip we show you how these ships use ballast to help them balance their load. Find out what ballast is and how it stops a ship from sinking. Also see the massive engines on these big cargo ships.

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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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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: Adding a Sprite

So, you have your new project in Scratch - now it's time to add a Sprite!

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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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MathXplosion, Ep 20: Crack an ancient Roman code

Decrypt the ancient cipher box used by Julius Caesar over 2,000 years ago! By shifting the alphabet or replacing one letter for another further down the alphabetical sequence, you can crack a coded message. The secret to a cipher is one special piece of shared information, known as a key. This shared key is required for ...

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Thinking about the design process

Watch as UNSW student and Blusat member William Frohlich talks about the design process. What are some of the important things to consider before you start to make a project? Why does William say it's important to be flexible with your designs? Design your own obstacle course for your family using objects from around your ...

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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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Unplugged Activity: What is computer science?

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

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How to Use Scratch: Making a Sprite Move

Tell your Sprite where to go - get your Sprite to move in all different directions - left, right, up, down

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For the Juniors: First the base, then the frame

Come and see Hugo's house getting built. Find out how the concrete foundations are laid. What comes next? Carpenters build a wooden frame. Spot the tools used to build the house. How is each tool used?

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Different paper plane designs

How many different paper plane designs are there? Lots! Watch as Dylan Parker, paper plane expert, demonstrates some of his favourites. Notice the way the different shapes and features of the planes cause them to move through the air in different ways. Which one do you like the most? Why not have a go at making something similar?

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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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Why every day should be Hour of Code day

Doncaster Gardens Primary School students participating in Hour of Code tell us what they love about learning coding and programming, and why they think it's important to learn for their futures. Their teacher, Carey Baldwin, offers some great starting points for both teachers and students to improve their skills – at any ...

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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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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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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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Learning programming offline

You don't need fancy technology – or even any technology at all – to learn about coding. ICT teacher Carey Baldwin teaches his students the principles of programming in this great activity. The materials required? Just paper cups and some enthusiasm to learn! This video was produced to coincide with the 2014 Hour of Code ...

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How to Use Scratch: Creating an interactive Holiday Card Activity

Looking for a simple project to get you started in Scratch? Add characters, animate them, create and share your own interactive Holiday Card.