iRubric: Water Filter Project rubric

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Water Filter Project

Work cooperatively to design , build, and test a water filter.

Rubric Code: P2W9CW5

By alandrak5

Ready to use

Public Rubric

Subject: Science

Type: Project

Grade Levels: 6-8

Water Purifier Project
	Poor 1 pts	Fair 3 pts	Good 4 pts	Excellent 5 pts
Engineering process 1 pts	Poor No evidence of engineering process in filter design.	Fair Some aspects of engineering process were used.	Good Most of the engineering process steps were used and explained.	Excellent Every step of the engineering process was used, and explained.
Success of design 1 pts	Poor Did not work at all or reflect the purpose of the challenge.	Fair May not have worked, but showed some application/ understanding of challenge.	Good Worked reasonably well. Demonstrates an understanding of the challenge and supported by application of information given.	Excellent Worked very well and showed excellent application of information and understanding of challenge.
Neatness 1 pts	Poor Filter is haphazardly arranged, leaks, and/or sloppy.	Fair Either haphazard arrangement OR leaking, and sloppy.	Good Filter is neatly arranged but aspects are sloppy.	Excellent Filter is neatly constructed with no sloppy aspects.
Water-Results 2 pts	Poor Water shows improvement in 1 aspect. Salinity , color, clarity, pH.	Fair Water shows improvement in 2 out of 4 aspects. Salinity, color, clarity, pH.	Good Water shows improvement in 3 out of 4 aspects. Salinity, color, clarity, pH.	Excellent Water shows improvement in 4 out of 4 aspects. Salinity, color, clarity , pH.
Water quality
	Poor (N/A)	Fair (N/A)	Good (N/A)	Excellent (N/A)
Clarity 1 pts Judge at t=3 minutes	Poor No change from original sample, measured at greater than 1000ppm	Fair Some change from original sample, measured at 501-1000ppm	Good Significant reduction in TDS, measured at 201-500ppm	Excellent TDS measured at 100-200ppm, equivalent to tap water
Salinity 1 pts	Poor No change from original EC, measured at greater than 500um/cm	Fair Some change from original EC, measured at 251-500 um/cm	Good Significant reduction from original EC, measured at 100-250 um/cm	Excellent EC measured 50-100 um/cm or equivalent to tap water
pH 1 pts For pH overshoots (measured at greater than 7, please award at Fair)	Poor No change from original pH (measured at 3-4)	Fair Some change from original pH (measured at 4.5 -5.5)	Good Significant change from original pH (measured at 5.5-6.5)	Excellent pH at neutrality (measured at 6-7)
Color 1 pts Please see reference samples for guidance	Poor Water remains highly colored , equivalent to original sample.	Fair Some reduction in water color, equivalent to strong tea	Good Significant reduction to water color, equivalent to weak tea	Excellent Water is clear and no little to no color remains, equivalent to clean tap water.
Volume per time measurement 2 pts Judged at t= 2 minutes	Poor O-25 ml of water has been successfully filtered	Fair 26-99ml of water successfully filtered	Good 100-199ml of water successfully filtered	Excellent 200-250ml of water successfully filtered

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