Curated OER
Population Pyramids
Learners work with and make population pyramids. In this population pyramid lesson, students use census data to make population pyramids for China, India, and the United States. They use the information to determine why jobs are leaving...
PBS
Pbs Teachers: Scientific American: Deep Crisis: Salmon Counting
In this lesson, students can explore the techniques of census and population counting by inferring numbers of a virtual population illustrated within a rectangular sampling grid, and observing the accuracy of the technique in relation to...