In this simulation activity, Evolution by Natural Selection , principles of natural selection are demonstrated by a simulation involving different color pompoms and student feeders equipped with different types of feeding implement. Students analyze results to see how different traits contribute to fitness in different habitats. Additional examples and questions help students to understand the process of natural selection, including three necessary conditions for natural selection to take place.
The attachment below provides a shorter version of the Student Handout with only one habitat in the simulation. This version may be suitable if you have a small class, a limited amount of class time, or students who require close supervision.
We invite comments on this activity, including suggestions for other teachers who are planning to use the activity and any questions you have. If you would prefer to send your comments or questions in a private message, please write Ingrid Waldron at firstname.lastname@example.org 
See also a complete list of activities:
Hands-on Activities for Teaching Biology to High School and Middle School Students 
|NaturalSelectionSHO2.docx ||2.97 MB|