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Catalyst: Probability and the birthday paradox

Even when a maths problem seems simple – for example, the chance of two people sharing a birthday – the maths can run counter to our human intuition. Mathematician Lily Serna poses a maths problem to the Clovelly Bowling Club: how many people do you need to gather to get a 50 per cent chance of any two people in that group ...

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Catalyst: Advances in nuclear power technology

Imagine our world if nuclear power generation could be made safer. Discover how Chinese scientists have developed a new nuclear reactor that reduces the chances of the reactor overheating to the point of meltdown. To do this the pebble bed reactor uses advances in technology to replace the traditional water-cooled system. ...

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Can We Help?: Efficient speech: the process of language change

Wassup, bro?Well 'pparently I ain't speakin' right.Will thou ha' the truth on't?We often think that only young people speak in abbreviated forms, but the truth is people have been doing this since Anglo-Saxon times! In this clip discover with Professor Kate Burridge some words that belong to the 'zero plurals' group, why ...

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Four Corners: Increasing threat of megafires

Many scientists believe we are already experiencing megafires and that they will continue to increase in the future. In this clip you will hear from Australian scientists at the forefront of fire research. Discover what they have to say about the causes, projections, and consequences of an increased megafire threat.

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ABC News: Supporting sustainable farming

Consider the vast land that is Australia. How might we, as a community, help to keep our land sustainable? Explore the ideas put forward by Professor Peter Cullen and Dr John Williams in response to the continuing drought conditions of 2003. What role could city dwellers play so that farmers could better care for the land?

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Importance of humour

Humour is a literary device some writers use to great effect. What are some of the reasons Shamini Flint uses humour in her books? What would be the effect of removing humour from her Diary series about a boy who is bad at sports?

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Planning and writing

How do you write? Do you get an idea and jump right in and start writing, or do you plan and think about your idea before you start? Everyone has their own writing style that works for them. Watch Lili Wilkinson talk about how she writes, and the importance of editing and being flexible with your original plan.

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Building a weather satellite

Designers and engineers improve upon existing products all the time. How important do you think it is to update and enhance something like a weather satellite? Can you think of some other objects that could be improved upon?

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An eclipse of the Moon

The phases of the Moon and lunar eclipses occur due to the Moon's orbit of Earth, and its position in relation to both the Earth and the Sun. Watch this animation showing a model of the Moon's orbit, its phases and a lunar eclipse. Discover what a total lunar eclipse is and what causes the red colour of a 'blood moon'.

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BTN: Nuclear tests at Maralinga

Can you imagine nuclear bombs being exploded in Australia, over your home? Between 1953 and 1963, the Australian Government led by Robert Menzies allowed Britain to test nuclear bombs in the open air at sites in Australia. These sites included Maralinga in South Australia. It was the land of the Maralinga Tjarutja people ...

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Editing with Alice Pung

In addition to being a writer, Alice Pung has experience as an editor. What was the advice her own editor gave her when she started editing other people's work? Alice believes that good editors ask writers good questions. How else can editors help writers? Next time a friend or classmate asks you to give them feedback on ...

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For the Juniors: Drawing a floor plan

How do we know what a house will look like before it is built? Discover how house plans work by looking at the design of a house that Hugo's family is going to build. See how a floor plan shows the room layout. See drawings of what the house will look like from different views.

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What is Music?: What is a musical phrase?

Sometimes we come across musical phrases that catch on like wildfire. With every repetition, these phrases take on more meaning. Listen closely for this jazz lick that has appeared in many forms throughout music history. What other popular musical phrases can you think of? What meanings do they carry, and what could you ...

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Can We Help?: Golly gosh, what do those sayings mean?

Have you ever wondered where sayings like 'golly gosh', 'by gum' or 'drat' come from? In this video, Professor Kate Burridge explains the origins and meaning of these and other sayings. She also explains the history of the pronoun 'you'.

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Roman Times: Were ancient Romans slaves to fashion?

What clothing would you have worn to look cool in ancient Rome? Like people today, many ancient Romans felt that they had to follow the latest fashions. Find out why for many men tunics replaced togas, and that in some periods men wore beards and in other times they didn't. See what hairstyle options were available for ...

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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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Catalyst: Take the Phi Golden challenge

The golden ratio, Phi: fact or fallacy? What about the Fibonacci sequence? We are told this ratio and its cousin Fibonacci occur everywhere in nature. Let's see which of these claims stacks up when put to the test.

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How to Build Stories, Ch 1: What is a story?

Stories are all around us and they're happening all the time. But what exactly is a story? Stories teach and explain things, create emotion and entertain us. Watch this wonderful video and find out more.

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Interviews With 10 Australian Authors, Ch 8: Experience colonial Australia with Tom Keneally

Thomas Keneally likes to put himself in the shoes of figures from history, whether it's as a member of the SS or an Indigenous man treated unjustly, and ask ‘What would I have done?' In this interview he discusses why he was drawn to the Jimmie Governor story and the significance of the looming Federation of Australia.

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How to Build Stories, Ep 4: Exploring genre and setting of your story

Every genre has different rules. But once you know them, you can choose which rules you want to break. Find out how you can mix and match genres to create unique, interesting stories!