Tag: sampling

  • Random Sampling

    Random Sampling

    Students model how field biologists would use a sampling technique to estimate the number of sunflowers in a field.  First, they choose 10 plots at random by choosing paper slips, then take the average of those plots.  The worksheet walks them through the steps of then using the average and the overall size of the…

  • 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…