Curated OER
Edible and Medicinal Plants: Field Trip Guide
Though it's designed to guide a field trip to the New York Botanical Garden, you could take resource like this one to a local park, wilderness area, school garden, or even a weedy empty lot. Middle schoolers identify plant parts and...
Education Development Center
Education Development Center, Inc: Weblabs: Mendel
Explore the genetics of plants discovered by Gregor Mendel in the nineteenth century. These interactives will walk users through the planting and growth of pea plants, possible combinations of plans to alter traits, predict the results...
Wikimedia
Wikipedia: Selective Breeding
This entry from Wikipedia provides information on the selective breeding of animals and plants, along with a discussion of Darwinism.