This site has a large number of animations of mechanical engineering mechanisms.
The TeachEngineering digital library provides teacher-tested, standards-based engineering content for K-12 teachers to use in science and math classrooms.
TryEngineering offers a variety of lesson plans that align with education standards to allow teachers and students to apply engineering principles in the classroom.
This site provides Engineering teaching and learning resources from federal agencies.
This resource, presented by ShoreTel, provides a comprehensive overview and additional resources on the topic of Cryptography.