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• TLF-IDL1302

Explore how sound travels as a wave. Examine diagrams and simulations to answer a series of questions about sound properties. For example, identify the effects of compression waves on the vibration speed of particles. Test the effects of changing wave properties: frequency, wavelength and amplitude. Transmit sounds in a ...

• TLF-IDL351

Use compass points and a scale to find places on a map. Understand abbreviations such as N, W, SW and E. Follow instructions to find four locations. As you go, look up the meaning of tricky words.

• TLF-IDM017994

How did the ancient Egyptians move and lift huge stones during construction of the pyramids? Secondary student Angus Atkinson designed an experiment to find out how the lives of pyramid workers could have been made easier. See how as you watch this video, which he entered in the 2013 Sleek Geeks Eureka Science Schools Prize.

• TLF-IDM017937

Fiery red, cool blue and sunny yellow are phrases used to describe feelings associated with colours. But what actually is colour? Why is it there and what helps us to see it? Follow Chloe Sheridan as she unravels the complexity of seeing colour by delving into its physics and biology. She entered this video in the 2013 ...

• TLF-IDM015774

If you picked up a paper book and a metal box do you think one would feel colder to the touch or would they feel the same? Watch this clip to see if people's predictions about the temperature of objects match their observations. You may be as surprised as they are!

• TLF-IDM018686

For decades China has experienced a mass migration of people from rural to urban areas. This large-scale movement of people is putting pressure on the resources and facilities of cities such as Shanghai. Watch this clip, first broadcast in 1993, to find out the reasons for China's internal migration and the challenges it ...

• TLF-IDM017982

China is experiencing rapid urbanisation. Rural workers are on the move, searching for new opportunities in China's largest cities. This process is fuelling China's economic growth and improving the wellbeing of its citizens. But is the rate of change too fast? Are there pitfalls on the road to prosperity?

• TLF-IDM015495

Take a close look at the flying mammal called the flying fox, or fruit bat. Watch these furry flyers as they leave their roosts to find food. Discover how and why they climb trees. See how these animals fly like birds but are not birds.

• TLF-IDM017731

The growth of the world's population and the pressure this places on resources and the environment is a highly debated topic. Watch this clip from 1996 to find out about the trends and concerns associated with population growth at that time, and consider how perspectives and patterns may differ today.

• TLF-IDM017453

Sydney is already Australia's largest city but the outlook is for an increasing population and continuous growth. Looking toward the planning horizon of 2031, a recent government plan has pleased some sections of the community, but it is not without its critics. In this clip from March 2013, see how the state government ...