Serendip
How Eyes Evolved – Analyzing the Evidence
Octopodes existed for hundreds of thousands of years before humans, yet our eyes share many similarities. Scholars analyze the evidence to determine if the evolution of eyes best fits a homology or analogy model. They discuss the issue...
Curated OER
Caterpillars and Climate: How Temperature Affects Feeding Rate In Insects
Do you eat more when you are hot or when you are cold? Young scientists observe the eating pace of two caterpillars at different temperatures. The differences in endotherm and ecotherm animals' ability to adjust to temperature change...
National Center for Case Study Teaching in Science
A Healthy Retirement?
Do men and women experience heart disease the same way? High school and college-level biologists examine a case study about a woman, Nancy, who is experiencing intermittent health issues; looking at her diet, exercise, and lifestyle...