Glogster is a web tool which enables you to create visiual posters. You van create a new canvas or choose prepared one. You can add videos, pictures and text. Teachers can use this in classes and make learning more fun.
Here is an example of Glogster.
It allows you to create posters and collages, certificates, invitations etc. It provides background art and easy to use tools. It can be very useful in learning.
Here is an example of PosterMyWall.