| Term | Definition |
| Problem | question |
| Hypothesis | a prediction about a problem that can be tested |
| Investigate | observe and experimnent using the process skills to find the answer to the problem |
| Conclusion | what you learned from your investigation |
| Experiment | a test or trial carried out under controlled conditions |
| Classify | grouping things according to similarities or differences |
| Observe | use the five senses to find out about objects and events |
| Predict | to state what you think will happen based on observations |
| Results | something obtained by investigation |
| Variable | anything in an experiment that can be changed to affect the outcome |
| Measure | the appropriate units to determine length, area, volume, time, weight and temperature |
| Metrics | a measurement system used by most countries in the world |
| Centimeters | a metric unit to measure length ( 100 cm=1 m) width of little finger |
| Meter | a metric unit to measure length (1000 m = 1 km) length from doorknob to floor |
| Kilometer | a metric unit to measure length (distance from school to grocery store) |