1. Experimental Design Helicopter Design

2. Bell Work- Problem
What affects the rate of descent for a paper helicopter if your only materials are one index card and one or more paperclips?

3. Hypothesis
If ________ (number ) paper clips are added to the helicopter then the helicopter will land _____ .

4. Materials
Paper clips
Index card
Scissors
Stop watch
Meter stick

5. Independent Variable
Helicopter Design

6. Dependent Variable
Average time for helicopter to land

7. Controls Helicopter design template Stop watch Meter stick Index card
Scissors

8. Procedures 1. Use one 3X5 index card
2.Use diagram to draw template of helicopter
3.Cut along the solid lines
4.Fold flap A forward and flap B to the back
5.Fold flap C forward and flap D to the back.
6.Release the helicopter 1 meter from the ground and time how long it will take to land. Do this a total of 5 times.

9. Procedures 7.Add 1 paper clip to the bottom of the helicopter
8. Release and time a total of 5 times.
9. Add 2 paper clips to the bottom of the helicopter.
10. Release and time a total of 5 times.
11. Average the trials for 1, 2, and 3.
12. Graph your results

10. Data Table Helicopter Trials
Average

11. What Graph do you use?
Bar Graph

12. Conclusion My hypothesis is correct or not___
My independent variable is__________
My dependent variable is ___________
My results from the experiment showed
Helicopter 1 _____ average
Helicopter 2 _____ average
Helicopter 3 _____ average
What did you learn from the experiment?