Option 1: Read aloud Science Warriors: The Battle Against Invasive Species by Sneed B. Collard III or Aliens from Earth by Mary Batten and Beverly Doyle, described in the Additional Resources. Invite a local scientist or resource specialist to talk to the class about invasive species in your area and what people are doing to control them.
Option 2: Have students participate in an invasive species control project. Contact your local parks or natural resources department to find out about projects in your area.
Option 3: Have students research species that are native to the United States but are considered invasive in other countries.
Option 4: Give students a math problem related to invasive species. The following example shows how these species reproduce at a geometric rate.
- Problem: You have a pair of nutrias and they breed twice a year. Each litter has four young, two females and two males. The females can begin to have young at 6 months. How many nutrias will you have in three years?
- Answer: 1,458 nutrias (problem solving is detailed below)
|Total Population||Adult Females||Adult Males||Young Females||Young Males|
|After 6 Months||6||1||1||2||2|
|After 1 Year||18||3||3||6||6|
|After 1.5 Years||54||9||9||18||18|
|After 2 Years||162||27||27||54||54|
|After 2.5 Years||486||81||81||162||162|
|After 3 Years||1,458||243||243||486||486|
See Additional Resources for more ideas to enrich this activity.