04.05 Ecological Tolerance Lab Worksheet
Materials:
paper
colored pencils, crayons or pens (suggested colors: black, red, green, yellow, blue)
100 small beans, rice, candy (any type)
Procedures:
Draw a brown circle (6 inches in diameter) on your paper and cut it out. Place it in the center of your table.
Draw a red circle (3 inches in diameter) on your paper and cut it out. Place it 3 inches above the edge of the brown circle in the center of your table.
Draw a green circle (4 inches in diameter) on your paper and cut it out. Place it 3 inches to the left of the edge of the brown circle.
Draw a yellow circle (4 inches in diameter) on your paper and cut it out. Place it 6 inches below the edge of the brown circle.
Draw a blue circle (3 inches in diameter) on your paper and cut it out. Place it 6 inches to the right of the edge of the brown circle.
Drop 100 beans from a height of 12 inches directly above the center of the brown circle. Each bean represents one species that attempts to immigrate to the island.
Record the number of beans on each island (not the brown mainland) in the data table. Each bean that lands on an island represent a successful colonization by a single species.
Collect the beans and drop them for four more trials. Record your results.
Student Name:
Time Estimate: 60 minutes
Pre-Activity Questions:
Use information from the lesson to answer these questions. Answer in complete sentences.
1. What conditions can impact the ecological tolerance of a species?
2. How does island biogeography decrease ecological tolerance?
Data:
Trial
Blue Island
Red Island
Green Island
Yellow island
1
2
3
4
5
Calculations:
Calculate the mean value for each island and record it in the data table. To calculate mean, add all the values of the trials and divide the value by the number of trials, which is five. Please show your work.
Example:
Trial One: 3 beans
Trial Two: 4 beans
Trial Three: 5 beans
Trial Four: 7 beans
Trial Five: 2 beans
Mean = 3 + 4 + 5 + 7 + 2 = 21/5 = 4.2
Blue Island
Red Island
Green Island
Yellow Island
Mean
Making Connections:
04.05 Ecological Tolerance Lab Worksheet
Student Name:
Time Estimate: 60 minutes
Pre-Activity Questions:
Use information from the lesson to answer these questions. Answer in complete sentences.
1. What conditions can impact the ecological tolerance of a species?
2. How does island biogeography decrease ecological tolerance?
Data:
Trial
Blue Island
Red Island
Green Island
Yellow island
1
2
3
4
5
Calculations:
Calculate the mean value for each island and record it in the data table. To calculate mean, add all the values of the trials and divide the value by the number of trials, which is five. Please show your work.
Example:
Trial One: 3 beans
Trial Two: 4 beans
Trial Three: 5 beans
Trial Four: 7 beans
Trial Five: 2 beans
Mean = 3 + 4 + 5 + 7 + 2 = 21/5 = 4.2
Blue Island
Red Island
Green Island
Yellow Island
Mean