| A | B |
|---|
| Repetition | Multiple trials (3 – 100’s) - Repeat, repeat, repeat - More accurate results (average) |
| Replication | Another person does your experiment/investigation - Makes it VALID and RELIABLE - Establishes a pattern |
| Scientific Model | A representation of an object or event that can be studied to understand the real object or event - NOT an INVESTIGATION |
| Investigation: Experimental | Follows the scientific method to solve a problem, answer a question, or test a hypothesis - Has variables, groups, and constants. |
| Investigation: Observational | Usually involves field work or making comparisons (research) - Using your senses to record what is taking place. |
| Control Group | Doesn’t contain the variable and is NOT being tested - Used for comparison - Expected results |
| Experimental Group | This test group contains the variable - May have more than one group - Experimental results |
| Inference | Based on prior knowledge, predict what is happening - helps explain observations |
| Observation | Based on five senses - Quantitative - Qualitative |
| Quantitative | Descriptive observation using senses |
| Qualitative | Measurable observation using tools |
