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Population Density: How Much Space Do You Have?

(Complete Item Description)

Abstract:: Students learn about population density within environments and ecosystems. They determine the density of a population and think about why population density and distribution information is useful to engineers for city planning and design as well as for resource allocation.

Subject:: Mathematics and Statistics, Science and Technology
Grade Level:: Primary
Collection:: TeachEngineering

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Stop Pointless Personal Pollution

(Complete Item Description)

Abstract:: This is a set of exercises based on some of the topics addressed in the accompanying article. They emphasize personal participation and creation of a program. In Exercise I, students are encouraged to take charge of their environment through an Adopt-A-Street program. Exercise 2 is a problem that uses math interpretation to lead students to think about a more water-conservative strategy for car washing. In particular, students are asked to work with fractions. The third exercise uses a case study to evoke thought and discussion among students about pet sources of bacteria in densely populated areas. The last exercise is a lab experiment that leads students into thinking about the effects of phosphates from household fertilizers and detergents on their waterways.

Subject:: Science and Technology, Social Sciences
Grade Level:: Primary
SubTopics:: Pollution
Collection:: U.S. Environmental Protection Agency

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