Designed for the Vermont Covered Bridge Museum, this simulation allows you to test out different truss designs. It includes an online tutorial on trusses.
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Knowledge Environments, Inc.Empowering learners and educators |
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K-12
Why do humans wage war? Have we had war throughout our existence? Are we destined to be warlike forever? Will we destroy ourselves? This anthropological view of war will change many of your preconceptions about human brutality.
Charlie Chestnut
Did you know that the dominant tree of the Northeast was the American chestnut tree? At one time 25% of Northeastern hardwood trees were American chestnut trees. Also known as the Redwood of the east, it had a diameter of up to seventeen feet and it grew to one hundred feet tall. It is also practically extinct due to a fungus inadvertently brought over from Asia. Let Charlie Chestnut tell you all about the American chestnut tree. A detailed teachers' section has lesson plans and activities (online, in class, and outdoor) for a complete classroom experience.
Save Neotropical migrant birds and you save the majority of songbirds of North America! During North American winters these birds live in the Caribbean, South and Central America but they migrate to North America every spring to breed. Without them our backyards and forests would be virtually silent. Learn about them at this Web site.
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