How Many Critters Live Here? Estimating Wildlife Populations.

Students observe pond organisms through a sample from a pond. In this pond organisms lesson, students use a pail and scoop from the bottom of the pond to take a sampling.  Students analyze the organisms removed from the pond and predict...

Students explore "populations" and "pet overpopulation" and why it's important to control pet overpopulation. They complete two math exercises to reinforce their comprehension of populatioons and pet overpopulation. Studnets define the...

Help learners discover methods to estimate animal population. They will participate in a simulation of catching and tagging fish in order to estimate the fish population. They scoop and count goldfish crackers, record data, and use...

Young scientists explore the dark, damp, and dirty world of earthworms in this hands-on life science unit. In order to gain a better understanding of these slimy critters, children first perform a series of investigations before finally...

Scientists discover over 15,000 new species each year. Despite studying life on our planet for all of human history, we still don't know how many species exist on Earth. An informative video from a biology playlist presents the dilemma,...

Do all species evolve? A timeless video that is part of the "Eons" playlist explains the term living fossils. It presents the species that many believe haven't evolved over millions of years. It goes on to break down each assumption and...

Are there more fish in the ocean or stars in the galaxy? The video begins with explaining the old method for estimating the number of fish in the ocean. Then it details the new method using SONAR. The differences in estimates lead to...

When samples provide different sets of data, the best way to calculate a more precise answer is with the mean. The lesson provides three different samples of data from a population that your learners should be able to calculate and find...

Your class examines a population density map to discover that a concentration of the world's people lives near oceans rather than inland. Discuss why. Discuss the challenges of living on the coast, especially as the water levels rise due...

How has the African American population changed over the years? Learners use charts, statistical data, and maps to see how populations in African American communities have changed since the 1860s. Activity modifications are included to...