These posters are great for any classroom or home. They are simple and easy to understand for students of all ages. They are a a set of 8. The elementary version of the Principles of Design posters helps students in grades K–8 develop their art knowledge and skills. This set goes hand in hand with the Artist WorkMat and book Artist Toolkit : Elements Of Art. 12" x 18" poster on high quality paper that can stand up to all kinds of abuse!