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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!

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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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Catalyst: Hemp is not a weed!

You may have heard about the cannabis plant and its use as the drug marijuana. But did you know it has two main varieties, one of them commonly called hemp? See how hemp differs from its 'cousin'. Find out more about the characteristics of hemp that make it a 'green' crop with plenty of potential.

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Lunchbox Legends - the people behind your lunch (Animation)

This is a video about the various occupations involved in developing and producing the food used in a ham and salad lunch roll. The video is presented by Will, a primary-school-aged boy, who identifies and describes nine occupations in several broad groups including researchers, growers of plant food; producers of animal ...

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Biofuels – From Sorghum to Ethanol (video)

This is a video [6:05 min] about the production of ethanol from sorghum at the Dalby Bio-Refinery in Queensland. The video describes and illustrates the stages in the production process including milling the sorghum into ‘flour’; mixing the flour with water to hydrolyse the starch; adding enzymes to liquefy the starch (the ...

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Ever seen robots play sumo?

Watch this clip to see sumo robots in action! UNSW student and Robogals member Jonathan Loong explains how the game works. How do the robots know when to turn around and move back into the ring?

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How do solar panels work?

The Earth intercepts a lot of solar power: 173,000 terawatts. That’s 10,000 times more power than the planet’s population uses. So is it possible that one day the world could be completely reliant on solar energy? Richard Komp examines how solar panels convert solar energy to electrical energy. This TedEd animation (4:58 ...

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Imagining other uses for robotics technology

It's cool to program robots to play football, but there are many more useful applications for programming robots to react to what they are seeing. What are some of the examples David McKinnon gives? Can you think of some more examples?

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Learning from design 'mistakes'

Finding the solution to a design problem involves generating creative ways to address a need or difficulty. Design is the key and it often involves an engineer. In this clip, explore what an engineer is and what they do, and see an example of how NASA engineers might plan, create and test an idea to fix a space station.

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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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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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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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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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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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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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Why become an engineer?

Are you interested in improving the way people live? What are some of the other reasons Ashwini Ranjithabalan gives for wanting to be an engineer?

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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 to fly around the world without fuel

Imagine if we could fly day and night using only solar energy. The expertly engineered Solar Impulse plane is flying around the world delivering a powerful message: clean technologies can achieve the seemingly impossible. Powered by a dream, determination and breakthrough engineering, this flying adventure aims to inspire ...

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The innovator

This is a short animated film highlights the versatility of wool as a natural fibre. The wordless film journeys through the ages and offers a unique view on how wool has been used - and continues - to clothe humans. The video provides an humourous stimulus resource to highlight the range of properties of wool.

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Robot biomimicry

This 9 minute video segment from Catalyst shows how inspiration from the world of animals has helped in the mechanical design of robots and adhesive materials.