| Hypothesis | Independent Variable |
|---|
| If one plant is placed in a clay pot, and another is placed in a plastic pot, the plant in the clay pot will grow more | |
| If plants are watered with either soda or water, the one being fed soda will grow more quickly | |
| A dry tennis ball will bounce higher than a wet or frozen one | |
| A frozen magnet will hold more paper clips than one at room temperature or one that has been boiling | |
| Lemon juice will clean pennies better than bleach, dish soap or laundry detergent | |
| Tin will rust more than aluminum when exposed to water | |
| Tap water will evaporate faster than salt water | |
| Boiling water will make the coffee dissolve more quickly | |
| Plant growth will be positively affected by adding aspirin to its water supply | |
| If two paper cups of water (one hot, one cold) are put in a freezer, the hot water will freeze faster | |
Digits of Pi
Multiplication Table
Minute Math (Addition)
