3 great websites to watch educational documentaries for free

Who of us don't like documentaries, especially those that travel in nature or history ... ,Practically the use of video in education or training is a good way, which may make you think a lot about incorporating it into your lessons, lectures, or presentations.
The problem that most of us may object to is how to find good, high-quality documentaries that can be used for educational purposes. This is what we will try to handle through these wonderful websites, which provide a rich library of documentaries classified by domains of interest: Science, arts, sport, technology ... and many more.

1- Top Documentary Films

This website offers more than 3000 documentary films. This large library is classified into 25 categoriess. It can also be accessed by searching words or surfing the website pages,

2- Documentary Heaven

It includes a very large number of documentaries hosted on other websites, such as YouTube and Vimeo , which are arranged in a way that makes it easier to surf. You can also see the best 100 films in a special section  based on the number of views.

3- Free Documentaries

Registration does not require paid access to that large number of high quality documentaries.