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Population Patterns: Sampling vs. Census

Price: $29.95
Order Number: 707.0307
Format : DVD
Sampling is a method scientists use to estimate the numbers of individuals that make up a particular population.

A scientist in Carlsbad Caverns describes the cavern’s bat populations, and a scientist at the Jornada Long Term Ecological Research site near Los Cruces, New Mexico, demonstrates how data are collected and how transect lines are used to estimate animal populations.

This lesson challenges students to:
• Use geometric scaling to estimate populations.
• Estimate populations using a capture-tag-recapture model.
• Use ratios to scale up or down to find the missing value in a proportion.
• Apply rates to describe population density.

Click here for Teacher’s Guide

Rights granted include: a) life of media audiovisual use, b) public performance, c) campus or building closed circuit and digital/video-on-demand transmission.

Ideal for grades: 6 - 9
Duration: 20 minutes
Producer: South Carolina ETV
Series Code: 707 & 707.0300

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