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Applied Science - Science and Math
(5B)
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Applied Science - Science and Math
(5B)
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PROBLEM: How many students in the class have better than 20/20 (6/6) eyesight?
PREDICTION:
MATERIALS: Snellen eye chart, astigmatism chart
Measure 20 feet (6 meters) away from the eye chart. Have your partner stand on that line. Point to several of the lines on the chart and record which lines they can see and which ones they cannot. Tabulate what eyesight you think the student has. Have your instructor check your conclusion. Use your partner's lab sheet to record the information.
Partner who is recording
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EYE |
LINES THAT CAN BE READ |
LINES THAT CANNOT BE READ |
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left |
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right |
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both |
Figure out your eyesight for "both" eyes.
Look at the astigmatism chart. Describe what you see. Do you have astigmatism?
After the class is finished with testing, the teacher should find out the following by a hand count. Record the class results.
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GIRLS |
BOYS |
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less than 20/20 |
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20/20 |
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more than 20/20 |
CONCLUSION:
