1. 1. Tire Pressure Experiment
Independent Variable (IV): air pressure
Control: car with recommended air pressure
Constants: gas in car, speed, roads
Dependent variable (DV) : miles per gallon

2. 2. Music experiment Independent Variable---music
Dependent Variable----blood pressure, pulse
Constants---group formation, time of day
Control----people in silence

3. 3. Bread Experiment Independent Variable (IV)----salt
Dependent Variable (DV)----amount of mold
Constants---bags, recipe, baking time, oven
Control----w/o salt

4. 4. Chocolate chip cookies
Independent Variable (IV)---baking soda
Dependent Variable (DV)----taste
Constants----oven, time, ingredients, size
Control----cookies with recommended baking soda.

5. 5. Paper helicopters Independent Variable (IV)--paper
Dependent Variable (DV)---how long it flies
Constants—hallway, size, weight, force

6. 6. Water Cups around the house
Independent Variable (IV)---location
Dependent Variable (DV)---water remaining
Constants---amount of water, cups

7. 7. Paint Experiment Independent Variable (IV)--paint
Dependent Variable (DV)----dry time
Constants----amount of paint, wood, painter