Here is a round-up of some of the most popular posters I have published here in Educational Technology and Mobile Learning. Of course at any time you can access the treasure trove of educational posters to use in your classroom right from this page.
As is usual with everything I share with you here, I am assuming that you are aware of copyright issues and therefore I wont go into details about them. Anytime you want to use a poster you need to give credit back to its owner. Luckily, most of the stuff I share in this blog is secured with creative commons for non commercial use which means that you can use it with your students in class without having to ask for permission. However, if you are not sure or if the copyright is not clearly stated in the poster you want to use, you are recommended to contact its originator for permission.