Curated OER
Thinking About Life in Geological Time Scales
High schoolers create a large (classroom-sized) timeline showing the history of life on Earth for the last 5 billion years. They are able to identify the events that are relevant to their taxonomic projects (the Origins and important...
My Science Site
Middle School Science: Shoe Classification Lab [Pdf]
This concise worksheet site will enable students to learn how to create a classification system and to understand the reasons for classification in science. Requires Adobe Reader.
The Franklin Institute
The Franklin Institute: Living Things Families
What do centipedes and crabs have in common? What's so special about a backbone? Check this site out from The Franklin Institute if you are interested in biology and classification.