Non-projected visuals such as still pictures, drawings, charts, and posters can translate abstract ideas into more concrete representations. They allow instruction to move from verbal symbols to a more visual level. These visuals are inexpensive and easy to use without additional equipment across different subjects and levels of instruction. They can be used to stimulate creative expression or for testing and evaluation. Common types include still pictures, drawings, organizational charts, timelines, tables, flowcharts, graphs like bar graphs and line graphs, as well as posters and cartoons.