Howard Hughes Medical Institute
Ebola: Disease Detectives
How did the Ebola virus first infect humans? Young virologists examine genetic sequences from the 2014 Sierra Leone outbreak to find similarities during a riveting activity. Following similar methods used by MIT and Harvard, partners...
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George Washington University
George Washington University: Basics of Cladistic Analysis [Pdf]
This is an advanced level review of cladistic theory and methodology. Some sections are very dense but there are useful sections for teachers and students seeking a better understanding of the topic.
Enchanted Learning
Enchanted Learning: Zoom Dinosaurs
Zoom Dinosaurs is a comprehensive on-line hypertext book about dinosaurs. It is designed for students of all ages and levels of comprehension. It has an easy-to-use structure that allows readers to start at a basic level on each topic,...