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ANTS - http://ants.wikifoundry.com/ This is the Animated Tutorial Sharing Project. It is a huge collection of screencasts. They have been collected by the Library Information Literacy Online Network (LION).
Code Academy - http://www.codecademy.com
Collection of computer programming aka coding tutorials Choose 1 or 2 that interest you to review.
Khan Academy - https://www.khanacademy.org
Collection of tutorials, courses, etc. on just about any topic you can think of. Choose 1 or 2 that interest you to review.
Intute: Virtual instruction Suite - http://www.vts.intute.ac.uk/
Collection of Internet research tutorials for multiple academic subject areas. Choose 1 or 2 that interest you to review. Note the "For Tutors" option in each tutorial that clarifies learning goals for the teachers using these learning objects.
ALICE - http://www.alice.org/
An educational software that teaches students programming in a 3D environment and is free from Carnegie Mellon University and Sun Microsystems. Note: This site is not the learning tool itself but rather the site is the tutorial for how to download and make use of the Alice software. The Alice software has to be downloaded and installed locally. It can be networked to run with a group from that point.