Tag: population

  • Population Genetics in a Fishbowl

    Population Genetics in a Fishbowl

    Students learn about Hardy-Weinberg equilibrium by exploring a virtual population of koi fish. This virtual lab allows students to run experiments where they can change variables, like population size, migration rate, mutation rate, and fitness of two separate alleles. The alleles being studied control the coloration of the fish. Fish can either be white, gold,…

  • Human Population Growth

    Human Population Growth

    Students graph population estimates for years ranging from 1650 to 2012. The graph will show an exponential growth curve which students analyze to determine how frequently the population doubles. Students also explore the concepts of carrying capacity and growth rates. Questions ask students to discuss what happens when the earth exceeds its carrying capacity and…

  • How Do Bunny Populations Change Over Time?

    How Do Bunny Populations Change Over Time?

    A set of images show how rabbits change over time as a result of selective pressure from wolf predation. Students match each graphic with one of the four steps of evolution on the VIDA chart: variation, inheritance, differential survival, and adaptation.

  • Measuring Biodiversity Using Beans

    Measuring Biodiversity Using Beans

    Students analyze a community of beans (pinto, lima, navy) to determine the richness, abundance, and biodiversity index of two communities. 

  • The Lesson of the Kaibab

    The Lesson of the Kaibab

    This activity asks students to graph the number of kaibab deer on the plateau after predators were removed, then analyze data and develop a better plan.

  • Investigation: Estimating Population Size

    Investigation: Estimating Population Size

    In this investigation, students simulate how mark and recapture techniques are used to estimate population size.   Prepare populations in advance by gathering 60-150 small objects, like toy spiders,  beans, or beads.   Toy animals seem to be more exciting for students, and you can sometimes find them at dollar stores.  In my class, I…

  • Case Study – Are Invading Bullfrogs Harmful?

    Case Study – Are Invading Bullfrogs Harmful?

    Students follow a story about an ecologist and a student who are studying the population size of bullfrogs in California.   These amphibians are considered an invasive species in that area and have been causing the decline of native species.   Students learn concepts related to community interactions and learn one species can cause the decline…

  • Population Biology with Paramecium

    Population Biology with Paramecium

    Activity illustrates the competitive exclusion principle by showing students how each population behaves when grown alone or when mixed together.

  • Case Study: Loggerhead Turtles and Population Models

    Case Study: Loggerhead Turtles and Population Models

     This case study focuses on survivorship curves and population models by examining a case about loggerhead turtles.   The case starts off with a story about how beach visitors must follow certain rules to not disturb native turtles and nesting behavior.   Students watch a video that shows how biologists moved sea turtle nests after the…

  • Hardy Weinberg and the Pocket Mouse

    Hardy Weinberg and the Pocket Mouse

    Use Hardy Weinberg equilibrium to analyze data of rock pocket mouse populations in the desert.