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Materials

The materials required for this science fair project:
- 10 participants 12 to 20 years old  who have played the violin for at least 5 years
- 10 participants 21 to 30 years old  who have played the violin for at least 5 years
- 10 participants 31 to 40 years old  who have played the violin for at least 5 years
- 10 participants 12 to 20 years old  who are non-violinists
- 10 participants 21 to 30 years old  who are non-violinists
- 10 participants 31 to 40 years old  who are non-violinists
- 1 ruler
- 1 wooden block

Procedure

1. For this science fair project, the independent variable is the age of the participants and  whether or not they have played the violin for at least 5 years. The dependent variable is the difference in the length of their left and right fingers. This is determined by measuring the length of their fingers using the ruler and wooden block. The constants (control variables) are the number of years for which they have played the violin and the method used to measure the length of the fingers.

2. Sixty participants are required for this science fair project out of which 30 participants are required to have played the violin for at least 5 years and the remaining 30 participants are non-musicians. Out of the 30 participants, 10 of them will be from each of the age groups 12 to 20 years, 21 to 30 years and 31 to 40 years old.

3. The length of the participant’s index, middle, ring and little fingers are measured on the left and right hand. The measurements are taken by placing a wooden block at the tip of the finger and using the ruler to measure the distance from the base of the finger to the edge of the wooded block.

4. The difference in length between the left fingers and right fingers  is calculated as follows:

Finger length difference = Length of left finger (index) – Length of right finger (index)

The measurement is compared between the same fingers, i.e. left index to right index finger.

5. The differences in finger lengths are recorded. After completing the measurements for all 60 participants, the average difference in finger length for each group is obtained by totaling the differences in finger length, and dividing the total by 10. The finger measurement which shows the most significant difference is used and the calculated results are recorded in the table given below.

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Complexity level:
7
Project cost ($):
5
Time required:
1 hour to prepare, 1 day for the science project experiment
Material availability:
Requires the participation of violinists. Try approaching members of an orchestra or string ensemble.
Safety concerns:

None