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Peat Pots
Rubric

Grade 5-8 Performance Task
Contributed by: New York State Education Department (NYSED)
NYS Alternative Assessment in Science Project (1996)

Maximum Score 17 points


Tasks 1 & 2 Directions
No credit

 


Task 3. Data Table
2 points total

 

Standard: The student will accurately record measurements on a data table.

Criteria:

  • 1 point if the data table is complete with reasonable values.
  • 1 point for all data recorded to the nearest tenth of a centimeter.

Task 4. Volume Calculation
1 point total

Standard: The student will apply mathematics to solve for an unknown.

Criteria:

  • 1 point for recording data and calculating the amount of water absorbed.

Task 5. Application
1 point total

Standard: The student will apply the knowledge of pore space to infer the amount of water retained in the model.

Criteria:

  • 1 point if line 3 of Task 4 and the answer given here are the same.

Task 6. Capillary Action Calculation
4 points total

Standard: The student will apply mathematics to calculate the average rate of capillarity.

Criteria:

A. Substitution

  • 1 point for the correct substitution into the equation. (Units not required)

B. Correct Units

  • 1 point for units recorded as cm/min.

C. Rounding

  • 1 point for answers recorded to the nearest tench of a cm/min.

D. Correct Calculation

  • 1 point for an answer within +/-0.2 cm/min.

Note 1: Base student responses on student data


Task 7. Graph
6 points total

Standard: The student will correctly set up graph axes, plot data points, and draw a line graph.

Criteria:

A. Axes Labeled

  • 1 point for both of the axes correctly labeled (naming variable)

B. Correct Units

  • 1 point for units recorded on both axes.

C. Appropriate Scale

  • 1 point for use of appropriate scale for the data.

D. Data correctly plotted

  • 2 points for plotting 7 or more points correctly.
  • 1 point for plotting 4-6 points correctly.
  • No credit is given for fewer than 3 points plotted correctly.

E. Line Correctly Drawn

  • 1 point for either a "best fit curve" or "dot to dot."

Task 8. Analysis
2 points total

Standard: The student will analyze and describe the plotted results.

Criteria:

  • 2 points for an accurate, logical description using complete sentences.
  • 1 point if the answer is correct but not in a complete sentence
  • No credit is given for an incorrect answer even if it written in a sentence.

Task 9. Conclusion
1 point total

Standard: The student will write a concluding statement based on his/her observations

Criteria:

  • 1 point if the conclusion is consistent with the data.
  • No credit is given for a conclusion inconsistent with the data.

 
Highest possible score - 17 points

Peat Pot - Scoring Form

Student ID ________________

Male or Female (circle one)

Circle the student's score for each question. Add the points for each question and write the total score at the bottom of the scoring form.

1 & 2. Directions   No credit  
3. Data table      
A. completed data table
0
1
 
B. recorded accurate data to the nearest tenth
0
1
 
4. Volume Calculation
0
1
 
5. Application
0
1
 
6. Capillary Action Calculation (6 points)      
A. data substituted properly
0
1
 
B. correct units
0
1
 
C. answer to the nearest tenth
0
1
 
D. correct calculation
0
1
 
7. Graph (6 points)      
A. axes (variables) labeled
0
1
 
B. correct units
0
1
 
C. appropriate scale
0
1
 
D. data correctly plotted
0
1
2
E. line graph correctly drawn according to data table
0
1
 
8. Analysis
0
1
2
9. Conclusion
0
1
 

TOTAL SCORE ______________

Total possible score - 17 points

 

 


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