| A | B |
| Observe | Use senses to get information |
| Collect Data | Using numbers |
| Estimate | Careful guess |
| Classify | Group things based on similarities |
| Infer | Suggest a possible explanation for an observation |
| Measure | Exact information (number or unit) |
| Predict | Based on past experience |
| Hypothesize | Suggest an answer to a problem |
| Record/Organize | Tables, graphs, charts, diagrams |
| Analyze | Study data to look for trends, patterns |
| Independent variable | Causes change in another variable |
| Dependent variable | Changes in response to independent variable |
| Controlled variable | Variables that are identical in both set-ups. |