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Contributed by: Kentucky Department of Education (KDE)
PERFORMANCE TASK STUDENT RESPONSE FORM
TASK: S2 - Powder
Grade 8
Student Name: _______________________________________________
School Name: _______________________________________________
School Code: _______________________________________________
GENERAL INSTRUCTIONS:
Write your name, school name, and school code on the lines above.
Do not open this packet until the directions tell you to do so.
The purpose of this task is to study several unidentified substances
and suggest a use for each substance. You will have a total of 45
minutes to complete this task. You may use up to 20 minutes to complete
the group work.
When your group is finished with the group work, one member of
the group should tell the person in charge that you have finished.
Your group should have the following materials:
- five powder samples
- water
- magnifying lens
- vinegar
- mixing tray
- cup
- scoopula (spoon)
- pencils
GROUP ACTIVITY:
- Suppose you have found four substances, labeled only A through
D. Your task is to study the characteristics of and determine
a use for each substance. As a group, examine the substances using
the materials you have been provided. Examine and test substances
for reactivity to water and vinegar but not to each other. For
example, do not mix substance A with substance B. Use small quantities
(no more than 4 spoonfuls) of each substance. Discuss your findings.
Each person should record the information in the data table.
DO NOT TASTE THE SAMPLES.
| CHARACTERISTICS |
A |
B |
C |
D |
| example: color |
white |
white |
white |
white |
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When you are finished with the work on this page, one member of
the group should tell the facilitator that your group has finished
its group work. Then do the individual work. Remember that you must
work alone on those pages. You may not discuss the questions or
share information.
INDIVIDUAL ACTIVITY:
- You are now going to examine a fifth unknown powder, labeled
E. List and describe all the characteristics of the substance
you can identify.
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- Discuss the similarities and differences you observed among
substances A through E.
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- Identify possible use(s) for each substance. Explain why each
substance could be used for the purpose you've identified.
Kentucky Department of Education
Performance Events 1993-94
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