To copyright your educational materials, you can simply create them and they are automatically protected under copyright law. You can also register your materials with the U.S. Copyright Office for added protection and legal benefits.
It depends on how the business interacts with copyright. Some companies create protected materials, some use materials created by others, and some exist specifically to manage copyrights and license uses.
Copyright encourages creators to create.
Yes; materials are protected by copyright as soon as they are fixed.
If you're using materials prepared by others (published charts, existing handouts, etc), you will need permission from the creator or an exemption in the law. Original materials you create are protected by copyright as soon as they are fixed in a tangible medium.
A minor owns the copyright on any works they create.
After copyright term has expired, materials enter the public domain.
Use only original material, materials in the public domain, or materials for which you have permission from the copyright holder.
Use only materials for which you are the rightsholder, materials in the public domain, or materials for which you have a license.
Materials on the internet are protected by copyright, just as their analog counterparts.
Stop downloading copyright infringing materials.
Accessing copyright-protected materials is very simple: you do it every time you read a book, turn on the TV, or listen to the radio.