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Your search returned 14 results

Listed under:  Mathematics  >  Number (Mathematics)  >  Proportions  >  Ratios  >  Rates (Ratios)
Moving Image

Calculating area: locust plagues

  • TLF-IDM015982

How many locusts in a plague? Find out just how big the threat of locusts can be and how farmers try to prevent the plagues from getting out of control. This clip provides context for a combination of area, area units and rate problems.

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Moving Image

Nautical Robots

  • TLF-IDM015450

How might you find out how much and where the Earth's oceans are warming? Watch the report by Ruben Meerman and discover how more than 3000 'nautical robots', known as argo floats, have been placed in the oceans to collect data on variations in temperature, pressure and salinity.

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Teacher resource

Secondary mathematics: different representations

  • TLF-IDS4971

These seven learning activities, which focus on 'representations' using a variety of tools (software) and devices (hardware), illustrate the ways in which content, pedagogy and technology can be successfully and effectively integrated in order to promote learning. In the activities, teachers use different representations ...

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Interactive resource

The Metrix: decimals: rate 1

  • TLF-IDL10884

Measure the rate of speed required for the Metrix spacecraft to escape the Earth’s orbit. Use the metric measurement table to help you make unit conversions involving decimal numbers. This learning object is one in a series of 26 objects.

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Interactive resource

The Metrix: decimals: rate 2

  • TLF-IDL10885

Measure the air pressure required to destroy an alien attacking the Metrix spacecraft, by converting between units of volume and time. Use the metric measurement table to help you make unit conversions involving decimals. This learning object is one in a series of 26 objects.

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Interactive resource

The Metrix: decimals: rate 3

  • TLF-IDL10886

Match the speed of the Metrix spacecraft to an asteroid's speed by converting between units of length and rates of time. Use the metric measurement table to help you make unit conversions involving decimals. This learning object is one in a series of 26 objects.

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Interactive resource

In proportion: variables in ratios

  • TLF-IDL8101

Complete customer orders for a large hardware store by interpreting the ratios. Work in the gardening department to fill orders for liquid fertiliser (expressed as ratios). Examine the equations suggested to you by your colleagues. Choose and solve the correct equation to complete each order. This learning object is the ...

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Interactive resource

In proportion: variables in rates and scales

  • TLF-IDL8102

Complete customer orders for a large hardware store by interpreting rates and scales. Work in the gardening department to fill orders for mulch (expressed as rates), and help out with scale plans in the timber department. Examine the equations suggested to you by your colleagues. Choose and solve the correct equation to ...

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Text

Burning Down

  • TLF-IDM020737

This resource is a web page containing a challenging problem solving task that requires an understanding of rate and proportion. It can be solved in a number of ways for example graphically, using fractions or equations and all involve reasoning. A printable resource and solution is also available to support the task. This ...

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Interactive Resource

Tax, super and you

  • TLF-IDM010782

The 'Tax, super and you' website is designed for use by students in years 10 to 12 and their teachers. It includes four modules: Tax 101 is a general introduction, Your tax focuses on individuals, Business tax on companies and the final module explores the concept of superannuation. Six interactive resources accompany the ...

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Teacher resource

TIMES Module 17: Number and Algebra: the unitary method - teacher guide

  • TLF-IDM008820

This is an 18-page guide for teachers. This module introduces the idea of ratios and rates.

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Teacher resource

TIMES Module 21: Number and Algebra: rates and ratios - teacher guide

  • TLF-IDM008824

This is a 17-page guide for teachers. This module introduces the idea of ratios and rates. Ratios are used to compare two quantities. The emphasis is usually on comparing parts of the whole. Rates are a measure of how one quantity changes for every unit of another quantity. It relates the ideas of ratios, gradient and fractions.

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Moving Image

Calculating ratios: Australian and US dollar

  • TLF-IDM015984

Have you looked at buying an item in Australia compared to buying it online? Often the online price needs to be converted to Australian dollars (AUD). Listen to Sarah Larsen describe the value of the 'Aussie' dollar compared to the US dollar (USD) and why the value keeps on changing. This clip provides a context to calculate ...

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Moving Image

Calculating ratios and percentage: gold price

  • TLF-IDM015985

Gold is a very precious metal. Listen to reporter Natasha Thiele explain how gold became so valuable and why the price of gold fluctuates. Find out how the ratio of dollar value per unit weight is used to calculate the value of an amount of gold. This clip provides a context to calculate ratios and percentage.

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