Search results

Video

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 ...

Video

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 ...

Video

For the Juniors: Ramping up the fun

Join Winston as he tests which materials slide down a ramp. Which ones will slip and which ones will grip? He's testing a wooden block, a stone, a glass bottle and an eraser. Predict what will happen. Watch to see if your prediction was right.

Video

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 ...

Video

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.

Video

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 ...

Video

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.

Video

Sam the Lamb: needs of sheep

This short entertaining video, narrated by ‘Sam the Lamb’ and a wool-growing family show where their sheep live, what they eat and drink and how they ‘chew their cud’. Viewers will discover what a herbivore is, and how many stomachs sheep have. The video introduces rotational grazing and how farmers look after their sheep ...

Video

Sam the Lamb: what is wool?

This short video, narrated by Sam the Lamb and a group of young woolgrowers, explores where wool comes from, how it grows and how it protects sheep in all kinds of weather. Viewers will discover what wool looks it, how it feels and how woolgrowers harvest their sheep’s woolly fleece each year…and how it grows back again.

Video

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 ...

Video

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.

Video

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!

Video

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.

Video

Catalyst: Can you solve the 'travelling salesman problem'?

Imagine you are a salesperson having to travel between multiple locations. How would you achieve this in the quickest way possible? This is a problem that has stumped mathematicians for decades, and there is even a prize for anyone who can come up with an algorithm to solve it. In this video, three methods are used to try ...

Video

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.

Video

How to Use Scratch: Deleting the Cat Sprite

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

Video

How to build a Mars rover

Imagine if you were building a robot to help you explore Mars. That's exactly what these engineering students are doing. Watch this video to find out about their design process. How important do you think it is to test and review the final product after it has been built?

Video

How to Use Scratch: Changing the costume of your Sprite

Make your Sprite look its best by learning how to change its costume.

Video

How to Use Scratch: Changing Colours of objects in Scratch

Make the images and objects in your project change colour when they are clicked!

Video

How to Use Scratch: Making Sprites interactive

Make your Sprite jump, move, say something or change costume.