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Soap, Wood, and Water
Rubric

Grade 5-8 Performance Task
Contributed by: New York State Education Department (NYSED)
NYS Alternative Assessment in Science Project (1994)

Maximum Score - 18 points


Task 1 Data Table 12 points total

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

Criteria:

A. Accurately measured mass of each of the samples within +/- 0.5 grams.
3 points
  Teacher Answers  
wood _________________ 1 point
Soap A _________________ 1 point
Soap B _________________ 1 point

 

B. Accurately measuring sample dimension =/-0.5cm
3 points

 

All nine (9) measurements correct   3 points
eight (8) measurements correct   2 points
seven (7) measurements correct   1 point
less than seven (7) measurements correct   0 points

 

C. Accurately calculating volume of the samples according to their measurements
3 points
  Teacher Answers  
wood _________________ 1 point
Soap A _________________ 1 point
Soap B _________________ 1 point

 

D. Accurately calculating density based on student data for each sample
3 points
  Teacher Answers  
wood _________________ 1 point
Soap A _________________ 1 point
Soap B _________________ 1 point

Task 2 Sketch and Label 3 points total

Standard: The student will correctly place and label each of the samples in the diagram (based on the student's calculated densities.

Criteria:

3 samples correctly placed and labeled   3 points
2 samples correctly placed and labeled   2 points
1 sample correctly placed and labeled   1 point
no samples correctly placed and labeled   0 points

Task 3 Ice Cube` 1 point total

Standard: The student will accurately sketch and label an ice cube in the given diagram.

Criteria:

An accurate sketch and label in the location of the ice cube   1 point
Inaccurate or no sketch and label of ice cube   0 points

Task 4 Ocean Water 2 points total

Standard: The student will describe and explain in a complete sentence what would happen to the four objects in ocean water.

Criteria:

A logical, reasonable answer in a complete sentence   2 points
Examples:    
All objects float higher in ocean water than in fresh water. OR  
Ocean water is more dense than fresh water and would push the objects higher.    
A logical, complete answer not in a complete sentence   1 point
No answer or improbable answer even if a complete sentence   0 points

Highest Possible Score - 18 points


Soap, Wood, and Water - Scoring Form

Student ID _____________

Male / 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. Data table        
A. Measure mass        
  • wood
0
1
   
  • Soap A
0
1
   
  • Soap B
0
1
   
B. Sample Dimensions
0
1
2
3
C. Calculate Volume        
  • wood
0
1
   
  • Soap A
0
1
   
  • Soap B
0
1
   
D. Calculate Density        
  • wood
0
1
   
  • Soap A
0
1
   
  • Soap B
0
1
   
2. Sketch and Label
0
1
2
3
3. Ice Cube
0
1
   
4. Ocean Water
0
1
2
 

TOTAL SCORE _______________

Total possible score - 18 points

 

 

 


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