CORRELATION TO NATIONAL STANDARDS

## The World at 7 Billion

 Background, Activities and Critical Analysis By Karim Kai Ani, Mathalicious Math 45-55 minutes Grades 7-12 Given the number of deaths & births that occur each minute, calculate how the global population changes each year Given current population (7 billion), use population change to determine annual growth rate as a percent Write and evaluate an exponential growth equation to model population growth Explain why even if the growth rate stays the same, the population will increase each year because of compounding Given graph, explain how population has grown over time (including calculating exponential growth rates) Estimate population in the year 2100 and discuss what life on Earth might be like with this many people Scientists estimate that on Halloween 2011 the global population reached 7 billion.  In this lesson we’ll explore how many people the Earth is adding and losing each minute, and use this to determine the [exponential] growth rate.  We’ll also predict what the world population will be in the future, and what life will be like with more and more people.  Teachers, click here to download the full lesson guide, including procedures and extension activities. Last Updated: October 28, 2011
 Karim Kai Ani is the founder and CEO of Mathalicious, an organization that seeks to transform the way math is taught by providing the best, most meaningful and most relevant math content available. Mathalicious lesson plans are aligned to traditional state standards and emphasize conceptual understanding through engaging real-world applications.
 Extra: News for Students The World at 7 Billion World Population Set to Hit 7 Billion