Howard Hughes Medical Institute
Color Variation Over Time in Rock Pocket Mouse Populations
While many mutations are neutral, those that appear advantageous increase in frequency in a population. Scholars use illustrations to make predictions about populations of mice. They follow it up with a video to confirm or refute their...
Howard Hughes Medical Institute
Population Genetics, Selection, and Evolution
The Hardy-Weinberg principle states that alleles and genotypes remain constant in the absence of evolutionary influences. Scholars complete a simple hands-on activity applying the Hardy-Weinberg principle to sample data. They observe how...
Serendip
Understanding and Predicting Changes in Population Size – Exponential and Logistic Population Growth Models vs. Complex Reality
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...
Serendip
Changing Biological Communities – Disturbance and Succession
After cutting down a forest to make a farm, how long would it take the environment to turn an abandoned farm back into a forest? Scholars study this exact scenario while they interpret many charts and graphs of the changing ecosystems as...
Howard Hughes Medical Institute
Exploring Biomes in Gorongosa National Park
Diversity in a biome leads to some unique characteristics vital to the natural environment. Young scholars use an interactive map to explore the vegetation and climate of the Gorongosa National Park. They collect climate data to compare...
Howard Hughes Medical Institute
Creating Chains and Webs to Model Ecological Relationships
The sustainability of an ecosystem depends on many factors and changes constantly. Young scholars consider these factors as they use a set of cards to create food webs. They review key scientific vocabulary such as predator, prey,...
National Nanotechnology Infrastructure Network
Can Small Pollutants Harm Aquatic Organisms?
Nanoparticles have toxic effects on plant and animal life—even though you can't see them. The second lesson of a two-part series has young scientists conduct an experiment that exposes plant and animals to nanoparticle pollutants. They...
Kenan Fellows
The Little Stuff Can Make a Big Difference
Great things come in small packages! What better way to illustrate this point than a week-long look at nanotechnology? Earth science scholars explore water quality issues through lab activities, then research new innovations in nanotech...
National Nanotechnology Infrastructure Network
The Effects of Colloidal Silver on Microbial Growth: Investigating Snake Oil Science
Can your classes solve the problem of the smelly sweat sock? Young scientists complete a lab investigation that begins by using electrochemistry to generate colloidal silver. They use their solutions to test the rate of microbial growth...
National Nanotechnology Infrastructure Network
How Can Nanoparticles Move from Land to Ocean?
Investigate the migration of the nanoparticle from land to water! A lab investigation asks budding scientists to simulate runoff. Testing water samples before and after the simulation leads individuals to make conclusions about pollution...
National Nanotechnology Infrastructure Network
Can We Absorb Nanoparticle Pollutants?
Just because we can't see it doesn't mean it isn't there! A growing concern for environmental scientists is toxic nanoparticles in our air and water. Young scholars conduct an experiment to demonstrate how these particles can cross our...
National Nanotechnology Infrastructure Network
Creating and Testing Silver-Nanoparticle Socks
Antibacterial socks are a product of nanotechnology. An inquiry-based instructional activity asks collaborative groups to create their own antibacterial socks and then test them against other products on the market. The sock with the...
Howard Hughes Medical Institute
Survey Methods
How many African elephants are on earth? How do scientists answer a question like that? An interactive resource explains a variety of survey methods and their advantages and disadvantages. It connects the need for a survey to...
Howard Hughes Medical Institute
BiomeViewer
Which holds more influence, the environment over humans or humans over the environment? Young scientists explore an online interactive that addresses this discussion. They observe changes in the natural world over time and see which...
Howard Hughes Medical Institute
Niche Partitioning and DNA Metabarcoding
What is DNA metabarcoding? Show your biology class the latest method for studying biodiversity in an ecosystem with a fun, informative interactive. Individuals examine the animal species that compete for vegetation, then learn how their...
Howard Hughes Medical Institute
Building Ecological Pyramids
Looking for a fresh take on traditional food/energy pyramids? Conduct an innovative activity where pupils build their own! The lesson uses research data from Gorongosa National Park in Mozambique for a real-life safari touch. Scholars...
Howard Hughes Medical Institute
Scientific Inquiry Using WildCam Gorongosa
How do scientists determine what questions to ask to meet their research goals? Help your class develop an inquiry mindset with a lesson based on studies in the Gorongosa National Park. Partners create their own research questions by...
Howard Hughes Medical Institute
Ocean Acidification
Human impacts on the environment can sometimes be difficult to measure, especially under water! An activity centered on ocean acidification gives science scholars the opportunity to examine the effects of carbon dioxide on marine life....
Howard Hughes Medical Institute
Niche Partitioning Activity
Dinnertime on the African savanna is a highly choreographed event! Introduce young ecologists to the concept of niche partitioning through a hands-on activity. Pupils research animal behaviors and use data to develop an understanding of...
Howard Hughes Medical Institute
Modeling Trophic Cascades
In the ecological game of who eats who, one small change can have a big impact! Individuals create food chains in an array of ecosystems, then determine what happens to organisms in the chain when one organism changes its feeding...
Howard Hughes Medical Institute
The Great Elephant Census Modeling Activity
They say elephants never forget—and your class won't forget an insightful modeling activity either! Junior zoologists take part in a mock elephant census using the sample count and total count methods. The included materials provide...
Howard Hughes Medical Institute
Exploring Trophic Cascades
What happens when the top predator on an ecosystem disappears? Scholars explore this idea through an introduction example and four case studies. They learn to analyze the importance of every member in a food pyramid to come to their...
Howard Hughes Medical Institute
Virus Hunters: Epidemiology of Nipah Virus
Who actually goes looking for a virus? Expose your class to the high-stakes life of an epidemiologist on the trail of the Nipah virus. Pupils engage in a short video, then examine how scientists predict, model, and find the source of...
Howard Hughes Medical Institute
Modeling Food Webs in Darién, Panama
It's a jungle out there! Young biologists journey to Darien, Panama to examine the intricate relationships between the organisms that inhabit the jungle. Groups begin by demonstrating an understanding of energy flow in ecosystems, then...