| Term | Definition |
| fact | a statement that could be proven by direct observation or a reliable reference guide |
| opinion | a statement that expresses an attitude or desire |
| prediction | a statement about the future |
| visual aid | charts, graphs, pictures, illustrations, photos, maps, diagrams, and spreadsheets |
| pie chart | a circle that stands for a whole group or set |
| bar graph | a visual aid that compares amounts by representing the amounts with differing lengths |
| map | a representation of a geographic area showing the important features of that area |