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NCTE Activity - Water pH
Task with Student Directions

GLOBE Assessment
Grade K-4

Literacy Activity for Protocol Test

Write a short mnemonic (memory aide) that will help you remember the colors for the different pH measurements.

pH Protocol Test

The pH protocol test assesses students' ability to collect accurate pH of water samples.

Download a Word or pdf copy.

Water pH Protocol Test





Student activity & Level of Performance

+ appropriate student performance

- inappropriate student performance

n.a. not appropriate or not observed

Accurate water pH measurements                                              
Rinse container 2+ times with test water                                              
Fill container 1/2 full with test water                                              
Submerge indicator paper for 1+ minutes                                              
Remove and compare to indicator color chart                                              
Identify pH; record results                                              
When pH reading is unclear                                              
Immerse used indicator in water for 1 minute                                              
Repeat until reading is clear; record results                                              
When pH reading is unclear after 10 min.                                              
Immerse new indicator paper for 1 minute                                              
If unclear, repeat and wait up to 10 minutes                                              
If clear, record results                                              
If unclear, record 2nd failure                                              


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