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BTN: What is the GST?

The Goods and Services Tax (GST) is a tax placed on things people buy with money or things people do for money. Can you name some goods and services that have GST? What about some goods and services that don't have GST? Find out when and why the GST was first introduced.

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MathXplosion, Ep 10: What is the strongest shape?

Are triangles really the strongest shapes ever? If so, why? Learn how and why right-angled and equilateral triangles have been used in engineering, architecture and design through the ages.

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Heywire: Crocodiles, jellyfish and self-expression

Have you ever sat through a classmate's oral presentation and nearly fallen asleep in the middle of it? Often this is because the speaker isn't using their voice in a way that gets your attention and keeps you interested. In this Heywire audio story, explore how Alpha Capaque, a young woman from the Northern Territory, ...

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Catalyst: The physics of a slinky drop

Imagine holding a slinky by the top end, with the bottom end dangling in mid-air. What do you think would happen when you let it go? Explore the physics of two equal and opposing forces working on an object in this awesome experiment!

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River Valley Civilisations: Mesopotamia, the world's first civilisation

Considered the birthplace of human civilisation, Mesopotamia (present-day Iraq, and parts of Kuwait, Turkey and Syria) was situated in the fertile valley between the Tigris and Euphrates rivers. What do we know of this ancient civilisation? What characteristics did Mesopotamia have that made it a civilisation?

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BTN: History of voting

Australia's first parliamentary election was in 1843. What was different about voting then? When and how did that change to resemble elections we have now? See if you can list the three significant dates in Australia’s history of voting and the changes that occurred on those dates.

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MathXplosion, Ep 11: Fun facts about the number seven

Did you know that the digits on opposite faces of dice will always add up to seven? Use dice as fun tools to reinforce fact families of seven, multiples of seven and subtraction skills.

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Foreign Correspondent: Damming the free and mighty Mekong

The Mekong has been a rare thing: a largely untouched and free-flowing river. Stretching for nearly 5,000 km from the mountains of Tibet to Vietnam's Mekong Delta, it has provided a way of life for millions of people and been an important trading route between south-western China and south-eastern Asia. In this clip from ...

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Gold rush

Walk through the streets of 1850s Ballarat at Sovereign Hill and learn about how the discovery of gold shaped the development of this region. What were the three distinct but overlapping eras of gold mining in Ballarat? How do staff at Sovereign Hill know what life was like for people during this time? Find out how the ...

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Engineering clean rivers

Figuring out how to clean up contaminated rivers is a big challenge. It's also tricky to work out where the most contaminated parts of a river system are and whether its fish are safe to eat. Watch this video and learn how engineering has helped to solve these problems. Why do you think engineers looked to the bottom of ...

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Counted: A new referendum

Today people are campaigning to hold a referendum that seeks to fully recognise Indigenous people in the Constitution. Why does Marcia Langton believe this is a crucial thing to do? What do you think? What makes Stan Grant Snr angry about the prospect of holding another referendum?

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Heywire: Call from a war zone

Listen to this Heywire audio story for how Jordan Curran describes the certainties and uncertainties of life in his family's long relationship with the Australian Defence Force. Could you write or record a similar story about yourself and/or your community? The ABC's Heywire competition calls for stories from 16-22 year ...

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Colourful Weather, Ep 1: What shape is a rainbow?

All you need is water, the sky and sunlight and you’ve got something that’s colourful – with a pot of gold at each end. What is it? A rainbow! Find out what happens to sunlight inside a raindrop, why rainbow colours are always in the same order and the real shape of a rainbow. Tip: it’s not an arch!

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The convict voyages

What do you think it was like for convicts on their voyage from England to Australia? Would you be surprised to discover that their life expectancy on board a convict vessel was actually higher than that of free settlers? Watch this video to discover why this might be, and learn about the convicts themselves.

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Catalyst: Volcanic eruptions at Mount Ruapehu

Imagine a volcano erupting kilometres away. You are afraid, worried for the safety of yourself and others. Paul Willis presents the work of New Zealand volcanologists conducting research at Mount Ruapehu, a volcano with a history of devastating lahar (water, sediment and rocks) flows. Learn more about lahar flows and the ...

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Catalyst: Chemical pollutants toxic to whales

Explore how chemical pollutants affect the Antarctic food web. A scientist shows that baleen whales are consuming Antarctic krill contaminated by accumulated residues of persistent organic pollutants (POPs) from pesticides and industrial chemicals. Find out why these pollutants are concentrated at the Earth's polar regions.

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What is Music?: What are the musical features of a news theme?

Music that introduces the news has to be not only dramatic and exciting but also neutral. It has to introduce war and disasters, as well as weddings and elections. It turns out, the music we associate with the news worldwide often originates from movies! So, what does an effective news theme often include? How would you ...

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Friction: Friend or foe?

What part does the force of friction play in our everyday lives? Friction can be an advantage (friend) or a problem (foe). Join interviewer Doug Traction and professors Static, Slide, Rolling and Fluid at the National Tribology Research Centre as they have forceful fun investigating friction. This video won a prize in the ...

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Benalla Migrant Camp

While many postwar immigrants were sent to Bonegilla Migrant Reception and Training Centre when they arrived in Australia, others lived at the smaller Benalla Migrant Camp. Like Bonegilla, Benalla is in north-east Victoria. Unlike at Bonegilla, however, many immigrants remained at Benalla for over a decade. Listen as Sabine ...

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Narrative structure with Gary Crew

Listen as Gary Crew talks about the narrative structure of his book, Strange Objects. What are the reasons he gives for incorporating so many different sorts of texts (from newspaper articles to diaries and archeological reports) into his narrative?