My Instagram account from my time as a teacher showing classroom activities and behind the scenes photos.
Adobe Software's Education Licensing webpage
Microsoft Licensing Site lists different types of licenses for products including Volume Licensing and Academic Licensing
Fair Use explains exceptions to copyright for specific uses, including education.
Copyright Law can have a bearing on what you can use in the classroom and how you can use it.
Symbaloo is an example of a Personal Learning Environment platform
Netvibes is an example of a Personal Learning Environment platform
Social networks as formal learning environments