Science / Year 4 / Science as a Human Endeavour / Nature and development of science

• TLF-IDM021646

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 ...

• TLF-IDM025101

Numbats are native Australian marsupials that can be found in Western Australia and South Australia. Unfortunately, their numbers are declining rapidly. What are the causes? What can we do to combat this and protect these unique Australian animals? Find out what one community group, the Numbat Taskforce, is doing to help ...

• TLF-IDM020570

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?

• TLF-IDM025103

The koala population in rural NSW has been declining over the years due to drought and heatwaves. What causes some of the temperature extremes experienced in this region? Dr Mella believes koalas normally get most of the moisture they need to stay hydrated from eucalyptus leaves. What has changed in recent years that means ...

• TLF-IDR3048

This is a black-and-white photograph of the exterior of an exhibition home made of fibrolite (fibro-cement) that was constructed by James Hardie and Co Ltd (now known as James Hardie Industries). The street outside the home is crowded with people, some of whom have come to view the fibrolite home. The photograph measures ...

• TLF-IDR6895

This is a colour photograph of an ancient fish ('Wadeichthys oxyops') fossilised in mudstone. This specimen is from the Koonwarra fossil bed in South Gippsland, Victoria. The fins, tail and body scales of the fish are clearly visible. Museum cataloguing numbers are written on the rock.

• TLF-IDR6885

This is a colour photograph of a feather fossilised in mudstone. This specimen is from the Koonwarra fossil bed in the South Gippsland region of Victoria. This fossil shows detail of the feather structure, including the central shaft and attached barbs.

• TLF-IDR9381

This is an edited sound recording of Australian medical scientist Ian Frazer outlining some of the joys and frustrations of a career as a medical researcher. One advantage, he says, is that researchers know that many people may benefit from the work they themselves are enjoying, but he warns against a career as a research ...

• TLF-IDR6878

This is a colour photograph of a marine amphipod ('Birubius wirakus'), showing its characteristic curved body shape and tail limbs.

• TLF-IDR6877

This is a colour photograph of an iron meteorite called 'The Cranbourne No 2 mass'.