CK-12 Foundation
Ck 12: Biology: Classifying Organisms Study Guide
This comprehensive study guide covers the main terms and concepts needed for a unit on classifying organisms.
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.
Alabama Learning Exchange
Alex: The Circles of Life
This is an inquiry based cooperative learning unit that can be used in biology as a graduation exam review or in botany for a nine week project. The students will learn the life cycle of mosses, ferns, gymnosperms and angiosperms. The...