Will human population growth always be exponential, or will we find a limiting factor we can't avoid? Young scientists learn about both exponential and logistic growth models in various animal populations. They use case studies to...

The Anthropocene covers the last century in an unofficial geological era. An informative video considers both the pros and cons of progress. It discusses the environmental impact, changes in lifestyle, political changes, wars, and...

The carrying capacity of an environment varies based on the organisms that live there. Using a virtual lab simulation, scholars test two protists living in their own environments and a third environment where both protists live. They...

Along came a spider, who sat down beside her. She screamed, but RJ wouldn't smash it because spiders are a limiting factor for other insects in an ecosystem. In this video, other common limiting factors for populations are listed....

Living and non-living things are both a part of an ecosystem. A video begins with ecosystem interactions using biotic and abiotic factors. It also covers food webs, limiting factors, and logistic growth. As a real-world connection, it...

Using technology, pupils find an exponential function to model the population growth of the US. With more information, learners derive the population growth formula for the world. Ultimately, they determine the amount of protein needed...

How are pests managed in a way that supports ecosystems? Individuals explore insects and ecology with a variety of hands-on activities. They learn about ecosystems and food webs by playing a modified game of tag and learn about the...

How do populations grow and change? Scholars define demographics and identify trends in human population growth and learn how to make predictions about population size based on data analysis. Learners then explore the concepts of age...

Graph growth in the US. Given population and area data for the United States for a period of 200 years, class members create graphs to interpret the growth over time. Graphs include population, area, population density, and population...

How do populations interact with one another? Identify the different types of interactions and how population sizes fluctuate and affect one another using an interesting PowerPoint presentation. Learners explore real-world examples of...

How fast is a city's population growing? Viewers of a short video learn to apply the slope formula in a population growth context. They see how to describe the population increase in people per year—a great example of math in the real...

Salmonella poisoning impacts over 200,000 people in the United States each year. Scholars learn about the growth of these bacteria using multiple approaches. Then they apply the same growth calculations to endangered species and think...

How have urban planners tried to attract people to cities? What can be done about booming birth rates in some parts of the world? How does a country's political structure affect the well being of its people? Scholars investigate these...

Carbon is in the air; should we care? Teach the class why it is important to pay attention to carbon levels and how the world population and various countries across the globe affect the carbon levels in the atmosphere. High schoolers...

Did you know that the population is expected to grow to 11 billion by 2100? The resource serves final installment in a six-part series on the global population and its effects. Scholars interpret data from the United Nations about the...

With a human population of 7.6 billion and counting, how do we tackle the population problem? Examine the data using a video from an extensive science playlist. The resource explains why the human population began to increase rapidly,...

Insects threaten the food production industry, and aphids are one of the big players! Analyzing data of aphid populations gives insight into their behaviors. Learners model the population data of an uninhibited population with an...

Did you know that, as the world's population increases, its demand for energy increases at an even faster rate? Learners watch a short video about the world's energy crisis before discussing the sustainable alternative energy sources....

As the reality of population decline across many species becomes real, pupils learn about the variables related to changes in populations. They complete a simulation of population changes and graph the results, then discuss limiting...

A change in a parameter can end in overpopulation. The resources gives pupils the opportunity to control the parameters of rabbits and wolves in a natural setting. Using the set parameters, the simulation runs and displays the population...

How does life evolve? The interactive provides a simulation based on the Game of Life invented by mathematician John Conway. Users can run the applet with the preset rules and settings or adjust them to view whether overpopulation or...

Combine agriculture and an increase in population density in sub-Saharan Africa and what do you get? Malaria! Young immunologists explore malaria's deadly rise to fame in a video. The narrator discusses its beginnings as a hitchhiking...

Given a function that models the population growth of a small town, pupils interpret the parameters of the exponential model. Scholars then find the intercept and the percentage growth factor and explain what they mean in terms of the...

If any of the limiting factors in an environment change, both animal and plant populations also change. The video explains two different models of growth and the impact of limiting factors. It highlights the carrying capacity of an...