This set contains 12 posters that display beautiful color photographs of WATER, AIR, SOIL, PLANTS, TREES, ANIMALS, MINERALS, ROCKS, PETROLEUM, COAL, NATURAL GAS and SUN as natural resources. They are standard full page posters (8.5x11). Each natural resource comes in two pages: one page shows the photograph and you'll find an accompanying page with an informational text about the specific resource. They may be used as display cards in your room, a center, a bulletin board or even a Powerpoint p