Names:
Bull’s Eye
2. Purpose: The scientific purpose of this lab is to find out if and how a person’s accuracy
and precision of throwing projectiles to a specific target will be affected when they are
spun immediately preceding a throw at the bull’s eye. The secret purpose of this
investigation though, is to see if it takes more focus to keep the projectiles in the range of
the target, when the person is disoriented, (we want to know if there’s a secret to discus
throwing).
3. Question(s): How does spinning someone affect accuracy and precision?
4. Literature Survey (theoretical background):
Accuracy:
Precision:
5. Hypothesis:
6. Materials:

Person that has arms and knows how to throw

Other person to spin first person (the one that’s throwing the objects)

Data collector (person); to record information

Target (garbage can)

Crumpled paper (many) for dart board, or any other objects that you can throw at
bull’s eye board

A bucket (in case of emergency)

Measuring tape (to measure how far off object was from target)

Paper and pencil
7. Procedure:
8. Data Table:
Number
of Spins
ACCURACY of darts
(distance between thrown object and target
in cm)
Precision
(distance between projectiles in cm)
Throw
1
Distance
between
thrown
object 1
and 2
Throw
2
Throw
3
Average
distance
away from
target
Distance
between
thrown
object 1
and 3
Distance
between
thrown
object 2
and 3
Average
distance
between
thrown
objects
0
2
4
6
8
10
9. Observations10. Results-
Average
Distance
Accuracy and Precision
ecision
100
80
60
40
20
0
0
2
4
6
# Spins
Accuracy
11. Conclusion:
12. Bibliography:
Internet Sources:
Book Sources:
Precision
8
10