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Listed under:  Mathematics  >  Geometry  >  Dimensions  >  Length
StillImage

Standard yard, Troughton and Simms, c1856

This is a Standard Yard made by Troughton and Simms of London circa 1856. It consists of a bronze bar in a wooden case. The yard is measured between fine lines marked on a gold pin in the well at each end of the bar. It is 113 cm long, 10 cm high and 8 cm wide.

Moving Image

Measuring our coastline

How long is the Australian coastline? See Dr Derek Muller and Simon Pampena discussing the perimeter of the Australian coastline. Find out how the accuracy of that measurement depends on the length of the 'measuring stick' used. They discuss how a coastline is much like a fractal such as 'Koch's Snowflake'!

Moving Image

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.

Moving Image

Measuring length informally

How do we measure how big something is? Flynn and Dodley want to see who has the bigger toy bus. Which bus is taller, wider, longer? Flynn models how to measure his bus using sticks so he can make a garage for his 'magic' bus. The Flying girl and others also do some measuring.

Moving Image

Monumental measurement mess ups

Did you know that in Australia we use a metric system for measurement? See if you know the units of measurement for length, mass and volume. Find out what system the United States uses. You guessed it - they don't use the metric system! See how a mix up of these units can cause all kinds of mess ups.

Moving Image

High rise living

Who is tall that you know? For a person, what height would you say is tall? In this clip we see what it means to measure the length of something compared to measuring the height of something. Find out the height of the tallest person in the world, measured in centimetres. Compare that to your own height. You'll be amazed ...

Moving Image

How many potatoes tall is Elmo?

NFL footballer Drew Bees and Elmo discuss how to measure length. Drew does his best to measure Elmo using a potato, a tube of toothpaste and a football as the units of measure. He also measures Elmo in inches using a ruler. For each unit of measure, find out how tall Elmo is.

Moving Image

Working out the areas

Do you know how to work out the area of a square, a rectangle or a triangle? Learn the simple maths formulas needed from this video. What would be the area of a rectangle with a height of 5cm and a length of 3cm?

Interactive resource

Measures: scaling down

Compare the areas of squares, rectangles and triangles before and after being scaled down (reduced). Notice that 'similar shapes' in the mathematical sense have the same shape but different areas. Explore the relationship between side-length reduction and area reduction when scaling down shapes. This learning object is ...

Interactive resource

Measures: similar solids

Compare the sizes and angles of a range of cubes and rectangular prisms. Notice that 'similar solids' in the mathematical sense have the same shape and possibly different sizes. Corresponding sides are in proportion, and corresponding angles are equal. Identify solids that are similar, and create solids similar to given ...

Interactive resource

Measures: volumes

Compare the volumes of a range of rectangular prisms when scaling up (enlarging) side lengths by different ratios. Notice that the rectangular prisms are not similar in the mathematical sense, but it is possible to predict the effect on the volume produced by the scaling of the sides. Identify and describe the relationship ...

Interactive resource

Zou ba! Clothing: sizes

Explore phrases used to describe the size of clothing. Describe how well clothing fits. For example ‘This is too big’. This object is one in a series of three objects.

Interactive resource

Exploring trigonometry

Label the three sides of a right-angled triangle as hypotenuse, adjacent and opposite sides. Identify which sides form a trigonometric ratio such as cosine or tangent. Watch a video showing how trigonometry is used to help planes land safely.

Teacher resource

World War Two propaganda posters - Teacher idea

This Teacher idea provides links to the Second World War propaganda posters that a year 10 history teacher used to support the study of the novel, 'McKenzie's Boots'.

Video

Broken Sun, 2008: German mortar attack

This clip shows Jack (Jai Koutrae) as he experiences the overwhelming noise and horror of trench warfare on the Western Front during the First World War. Jack and his fellow soldiers are seen sheltering in a trench when the first shell of an artillery barrage explodes nearby. As more shells explode and dirt pours on the ...

Video

Broken Sun, 2008: The breakout

This clip shows a dramatised scene of Japanese prisoners of war (POWs) preparing to break out of the POW camp near Cowra in NSW in 1944. Hut leader Kamimura (Kuni Hashimoto) encourages the POWs to put the shame of their capture behind them and 'die like the carp'. An impression of the break-out is created through shouts ...

Teacher resource

Australia and the First World War - a unit of work

This unit of work for middle and upper secondary students explores the influence of the First World War on the construction of Australian identity. An introductory exploration of the Australian digger myth and legend is followed by five activities framed as investigations. Links are provided to a variety of online resources, ...

Teacher resource

Australia and conflict: Boer War and First World War - Teacher idea

This Teacher idea explains how students developed their understanding of the Boer War and First World War through extensive investigation of first-hand accounts, images and film footage. It includes a unit of work developed and trialled by a teacher.

Teacher resource

Cooee: a call to war: Teacher idea

This Teacher idea uses footage and photographs of the First World War to help students understand the causes of the War, the experiences of those who fought, the reactions of those on the home front and the Anzac legacy that continues today. It includes a unit of work developed and trialled by a teacher.

Video

Searchlight on Japan, c1948: Rehabilitation and re-education

This clip shows Allied attempts to 're-educate' the Japanese population and transform Japan into a peaceful democratic state after the Second World War. Street scenes show occupation forces mingling with civilians. In a library there are new textbooks about democracy, and the narrator says that 'existing textbooks have ...