| A | B |
|---|
| Procedure | correct way of doing things |
| Logic | a way of thinking based on knowledge |
| Observation | watching something for a long time |
| Inference | to decide something is probable |
| Hypothesis | an idea that needs to be proven to be true |
| Experiment | using things to find out the results |
| Variable | something that changes |
| Conclusion | formal decision |
| Theory | idea that tries to explain why something happened |
| Valid | something that is true |
