HowTo read population pyramidsOnline version In this presentation, it will be explained how to read population pyramids by Educaplay Educational Resources 1 What are population pyramids? Population pyramids are graphical illustrations that shows the distribution of various age groups in a population. 2 Population Pyramid distribution by sex The info shown in a population pyramid is horizontally divided by sex in two colums.One of this column will show the details of male group of population and the other one will shown the details of the female group of population 3 Population Pyramid distribution by age Vertically, each section will englobe an slice of age, going from the youngest portion of population - at the bottom of the pyramid - to the oldies ones - positioned at the top. 4 Population tree shapes 5 Christmas Tree pyramid The Christmas tree pyramid case (also known as expansive or \"youth bulge\") is very wide at the base, indicating high birth and death rates.Youth bulge can be seen as one factor among many in explaining social unrest and uprisings in society.Many countries with the largest youth bulge are African nations severely afflicted by epidemies or wars, which has decreased overall lifespan dramatically. As of 2012, the largest youth bulge is found in Zimbabwe, which has a population structure with 56.57% between the ages of 15 and 29. 6 Box pyramid The Box pyramid shape can be typically found in countries with low fertility and low mortality. 7 Cup pyramid Cup pyramid with video 8 Resume 9 More info If you want to learn more about Population Pyramids:http://en.wikipedia.org/wiki/List_of_countries_by_median_agehttp://populationpyramid.nethttp://esa.un.org/wpp/population-pyramids/population-pyramids.htm