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• 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.

• 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 ...

• 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 ...

• 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.

• TLF-IDM008820

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

• 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 ...

• 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.

• 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 ...