Social studies - the science of the humanities and civic competence. It ranges from a huge gambit, from economics and history to political science and psychology to civics and culture; but whatever it is you need to teach or impress inside of a growing mind, posters and pictures of these things can help simply by being around.
From photographs of historic moments in the history of sports, from Jackie Robinson stealing home plate in 1952 to the raising of the American Flag on Iwo Jima, an iconic moment in time in American history during World War II, to famous paintings of historical people and documents - like Washington crossing the Delaware during the revolutionary war to the signing of the Declaration of Independence - these moments of American culture displayed in posters can ensure that learning minds feed on the information of the past whether they're in the classroom or staring at their own bedroom wall.
Important historical documents - like the Declaration of Independence - can be found on different types of fabric for a different sort of aesthetic and legibility if you need a textile stimulant for someone learning social studies or need something to hang up on the wall of a classroom.
Placing these moments of history is an important decision, but an easy one; photographs of historical people can find their way to any room of the house or any surface in a classroom, and from national flags of the world to depictions of events or cultural renaissance you can add history to the atmosphere of any room with just a little consideration.