In this activity students are introduced the idea of Plausible Estimation (PE). PE underpins major decisions made in private and public lives. PE tasks allow students to appreciate how powerful simple mathematics can be when making decisions about important topics by solving problems faced by aid agencies, government planning agencies and salesmen. This resource can be used as a set of self-contained activities to develop PE skills in students, or a collection of activities to illustrate the power of simple mathematics to inform important decisions. Examples of questions students will face are: • When will the world’s oil reserves run out? • How much land would be needed to build a wind farm to supply 25% of London’s electricity? • If the sea level rises by 50 cm, how many people will be homeless in Bangladesh and London? • What will be the population of Europe in 2020? • An earthquake destroys Istanbul – how many people are homeless, how much water, food and housing is needed, and how long will it take you to get it all there? • What would it cost to give every pensioner another £10 per week? • Can I afford to run a car? To use this resource: • download the zip file • extract all of the files • run the start file

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Diana Solitro

Has anyone managed to download this file?

Rachel Smart

The file is a .exe file. It will allow you to open (will take around 5 seconds to complete), but will typically ask you to validate that you want to run the software on your computer (for security reasons). Please let me know if you continue to have further issues.

Diana Solitro

Hi Rachel, thank you for getting back to me, but unfortunately I still have problems: once the file is downloaded and I allow the app to run, I get an error message saying that I might not have all necessary permissions to access it, although by checking the file properties I can see that I have full access (only the special permission missing, which I cannot add myself).

Diana Solitro

Forget it, I eventually managed to open it...
Thank you!