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Student activity & Level of Performance
+ appropriate student performance
- inappropriate student performance
n.a. not appropriate or not observed
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| Accurate
water pH measurements |
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| Rinse container
2+ times with test water |
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| Fill container
1/2 full with test water |
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| Submerge indicator
paper for 1+ minutes |
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| Remove and compare
to indicator color chart |
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| Identify pH;
record results |
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| When pH reading
is unclear |
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| Immerse used
indicator in water for 1 minute |
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| Repeat until
reading is clear; record results |
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| When pH reading
is unclear after 10 min. |
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| Immerse new
indicator paper for 1 minute |
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| If unclear,
repeat and wait up to 10 minutes |
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| If clear, record
results |
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| If unclear,
record 2nd failure |
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