Visit Engineering with Science Kids to find games, quizzes, videos, experiments, and more all in one convenient location.
http://www.sciencekids.co.nz/engineering.html
Visit Instructables to check out over two dozen project based engineering projects for kids, everything from bridges and cars to mechanical hands and towers.
http://www.instructables.com/id/Project-Based-Engineering-for-Kids/
See completely free, online curriculum developed by the Boston Museum of Science. Activities and adventures for preschool, kindergarten, grades 3-5, and middle school.
Crash Course Kids, presents engineering compilations an overview of engineering and engineering concepts.
http://www.youtube.com/watch?v=qDcMq1SjR_I
Crash Course Kids, presents Physics a series of Physics videos for teens and adults (suitable for younger kids, too, depending on knowledge base).
http://www.youtube.com/watch?v=ZM8ECpBuQYE&list=PL8dPuuaLjXtN0ge7yDk_UA0ldZJdhwkoV
Visit PBSkids Design Squad Global to view hands-on engineering, science, and technology activities from PBS. Watch videos, play games, and enter the engineering challenge.
http://pbskids.org/designsquad/
The entry hub for a host of resources on engineering and STEM information, visit, NASA for Kids for an introduction to engineering.
http://www.nationalgeographic.org/media/nasa-kids-intro-engineering/