LifeExpectancy - Teachers guide on how to use a Gapminder...

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Teacher’s guide on how to use a Gapminder Power Point presentation about Life expectancy Life expectancy is an important measure of a country’s overall health. A Power Point presentation that explains the basics of Life expectancy is available at: www.gapminder.org/downloads/life-expectancy-ppt This is a guide on how to use the Power Point presentation. About the Power Point presentation Level: secondary school. Subjects: history, geography and social studies. What you need: a computer, a screen and a projector.
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OVERVIEW Key messages of the Power Point presentation Life expectancy is a very important measure when we compare the health of different countries. However, students often misunderstand some of the characteristics of life expectancy. The Power Point presentation focuses on two of these characteristics: 1. Life expectancy is an average . Most people live either much longer or much shorter than what the life expectancy indicates. 2. When life expectancy is low, this is mostly due to a very high child mortality rate. Those that survive the dangers of childhood can expect to live to a relatively old age, even in countries with very low life expectancy. To illustrate these points we display the expected life spans of five newborns in the African country of Burundi and five newborns in Sweden. The five Burundians (see the figure in the top-right) illustrates that most people live either longer or shorter than the mean life expectancy. A comparison of the five Swedes with the five Burundians (see the figure on the next page) illustrates that when a country has a low life expectancy it is usually because child deaths are common. About this document You will find an outline of the presentation on the next page. The Power Point presentation contains 22 slides (the first slide is not intended to be shown). Two types of graphs are used repeatedly throughout the Power Point. We will start by explaining these graphs. The “life span” graph The life spans are illustrated in a graph that we call the “life span graph”. This is a simple bar chart, where each of the five bars represent the life span of one of five persons. Each person represents the average life span of 20% of the population. Hence, the first person from the left represents the average expected life span of the 20% of the population with the shortest life spans. The second person represents the next 20%, etc. The “Gapminder World” graph The Power Point presentation also contains a simplified version of a graph that we call “The gapminder world” graph. Each country is represented by a bubble in this graph. The vertical axis shows the life expectancy and the horizontal axis shows income per person. The size of the bubble represents the population.
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This note was uploaded on 11/20/2011 for the course STATISTICS ST3241 taught by Professor Manwai's during the Spring '11 term at National University of Singapore.

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LifeExpectancy - Teachers guide on how to use a Gapminder...

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