Population Ratios

Find the percent of the population that meets the criteria. The 17th segment of a 20-part unit presents problems that involve percents of a population. Pupils use tape diagrams to create equations to find the percents of subgroups of the...

Examine ratios and proportions in several real-world scenarios. Children will calculate unit rates, work with proportions and percentages as they plan a party, purchase produce, and take a tally. This lesson plan recommends five...

Analyze data on a graph to answer three questions after a robot race. Learners practice comparing ratios and reading points on a graph. Answers may vary on the last question based on accuracy of graphing. Use the lesson along with three...

It's a small world after all. In the middle school assessment task, learners use data that imagines there are only 100 people in the world to answer questions about population demographics. Young mathematicians use ratio and proportional...

Seventh graders convert between ratios and proportions. In this algebra lesson, 7th graders write ratios and proportions that are equivalent. They convert between the two and percents.

Students compare contemporary cultural differences with historical differences based on population percentage. In this cross-curriculum Gold Rush/math lesson, students analyze aspects of California's Gold Rush population and diversity...

The context of rabbit populations introduces the Fibonacci sequence. Scholars then calculate ratios and see how they converge to the golden ratio. They also explore some instances of the Fibonacci sequence and golden ratio in nature.

In this assignment, math stars simplify ratios. The first half just displays numbers, whereas the second half describes real-world scenarios with ratios to be written and reduced. The publisher mentions CCSS.Math.Content.6.RP.3, but it...

Explore proportions through an interesting hands-on activity. Learners model the population of birds using beans. They tag a sample size of the beans and use a proportion to estimate the actual population size. 

O, Canada! Young mathematicians explore population data for Canada and the US. They find a "Rough Rule of 10" (that the population of the US is roughly 10 times that of Canada) and then look at the population densities of US states.