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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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Growing carbon nanotubes

Carbon nanotubes are a very tiny but super strong material used in manufacturing to create strong, lightweight products. Besides sporting equipment, find out what other kinds of products are made using these tiny molecules. What other qualities (besides size and strength) do carbon nanotubes have that makes them even more ...

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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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Getting satellite design right

Is it a good idea to build a complex and expensive machine without carefully checking the design first? This animated clip describes some of the steps NASA took during the design review process for the development of a new satellite. Can you think of any other steps in design reviews?

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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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Introducing Agriculture - from the paddock/ocean to the plate

This is a video about where food comes from and how it is produced. The video is presented by Amy and uses cut out animation and a spoken commentary with numerous puns and riddles to introduce and explain the concept and purpose of agriculture. Amy then details the steps in producing milk and honey. The video lasts for ...

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Reverse engineering

This series of short videos from Khan Academy deconstruct and explain the way household items are designed and how they work including a digital alarm clock radio, a coffee maker, a tap light (a toggle switch light), a hair dryer, a DVD player, a universal remote and a digital camera.

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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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What makes these paper planes fly?

Have you ever wondered what makes a paper plane fly? Think about the design of the paper plane as well as external factors like the various forces that are at play, then make a list of the design considerations and a list of the different forces.

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For the Juniors: Super-fast jet boats

Jet boats can go really fast. Instead of an outboard motor and propeller, jet boats have an inboard engine and they eject a jet of water out the rear of the boat. Watch this clip to see how they work.

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For the Juniors: Tall buildings that won't fall

What makes tall buildings strong and stable? View this clip to find out how a tall building made from concrete is made even stronger. Look at a model of the building to see how it will look when it's built. See if you can pick up some design tips to help you build your own tall structure!

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For the Juniors: Thoughtful design

Meet Hugo's nan, who gets around in a wheelchair. See how her house is designed for a person in a wheelchair. Watch for things that suit her needs.

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Use your creative thinking skills!

Ashwini Ranjithabalan from Women in Engineering and IT at the University of Technology Sydney (UTS) sees engineering as the business of solving future problems. What are some of the challenges we (and our societies) might face in the future? Get some friends together and see if you can brainstorm a list. Now choose one ...

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Building spaghetti bridges

Have you ever tried making a bridge out of dried spaghetti? What about a spaghetti bridge that can support a roadway and small car? Watch as teams of first-year university students reveal and test their designs. How did they decide what kind of bridges to build? Have a go at designing, testing and building your own spaghetti ...

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How to design and build a robot in six weeks!

Evan, a mechanical mentor for FIRST Robotic Competition's 3132 'Thunder Down Under', outlines the processes involved in designing, building and testing a robot in six weeks. What influences the team in their design and building processes? Can you think of anything else that might influence the design and build of the robot ...

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Know your robotics materials

Sean, a robotics mentor for FIRST Robotic Competition's 3132 'Thunder Down Under', worked on the robot's intake system which allows it to take in the 'boulder', or the ball, so it can then shoot into the high goal or the low goal. What were some of the challenges he faced in designing and building this feature?

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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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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 ...