PASCO ME-9849 Significant Figures Set - Manual (Page 5)

Model No. ME-9849 Significant Figures Set
3 ®
Activity 1:
The Bull’s Eye Ball Toss
Procedure
1. Lay the sheets in this order: Bull's Eye/
Carbon Paper/Bull's Eye. Tape the top edges
together so that all three remain attached.
Place the sheets on the floor.
2. Decide upon a technique to drop the ball from
a 2 meter height so that the ball strikes the
center of the target. No other equipment may
be used.
3. Drop the ball. Make sure a lab partner catches
the ball after it bounces off the target.
4. Label the mark on the bottom Bull's Eye with
a number "1" and your initials to indicate
your first attempt.
5. Repeat steps 2 through 4 until there are 10
attempts. Make sure the same technique is
used each time.
6. Blindfold a lab partner and repeat steps 3 though 5. The other lab partners may direct the
blindfolded lab partner, but only from a location approximately 2 meters away from the Bull's
Eye.
Post-Lab Discussion
Ask students to make a sketch of their results of the bull's eye on a white board. The teacher
should gather several examples of the following: 1.) precise but not accurate results and 2.)
precise and accurate results. In addition, have a couple sample bull's eyes ready in case none of
the student samples have the proper results.
Equipment Required Part Number
Bull’s eye (2) part of ME-9849
Plastic balls part of ME-9849
Carbon paper part of ME-9849
Tape