Grade 58 Performance Task
Contributed by: New York StateEducation Department (NYSED)
NYS Alternative Assessment in Science Project (1996)
Maximum Score  16 points
Task 17  Directions 
 No credit 
Task 8A  Data Table 
 3 points total 
Standard: The student will make precise measurements
and record them accurately in a data table.
Criteria:
A. 2 points for a completed data table
B. 1 point for accurately recorded data
 data must be recorded to the nearest tenth of a centimeter
Task 8B  Graph

 6 points total 
Standard: The student will correctly set up graph axes,
plot data points, and draw a line graph.
Criteria:
A. 1 point for correct labeling of both axes
B. 1 point for correct units recorded on both axes
C. 1 point for appropriate scale on both axes
D. Data correctly plotted
 2 points for 710 points accurately plotted
 1 point for 36 points accurately plotted
 0 points for 2 or fewer points accurately plotted
E. 1 point for accurately drawn line graph
Task 9  Relating Model

 2 points total 
Standard: The student will relate the model to his or
her knowledge of geologic processes.
Criteria:
 2 points if the student indicates a change of the rate of
sinking consistent with his or her graph in a complete sentence.
Student should refer to the rate of sinking of mountains or
land masses.
 1 point if answer is consistent with their graph but not a
complete sentence.
Task 10  Crust Thickness

 2 points total 
Standard: The student will explain how and why geologic
processes occur based on his or her observations of the model.
Criteria:
 2 points for a reasonable explanation that relates a knowledge
of mountains to the model.
 1 point for a reasonable explanation but not in a complete
sentence.
Samples:
 The crust is usually pushed deeper beneath old mountains because
they have existed for a longer time. The test tube settles deeper
over time.
 The crust would be pushed deeper under older mountains but
might be sinking at a slower rate, as time goes on this is similar
to what is shown by the slope of the graph.
Task 11  Other factors

 3 points total 
Standard: The student will identify two or more factors
not addressed by the model.
Criteria:
 3 points for three reasonable factors
 2 points for two reasonable factors
 1 point if only one factor is given
Samples:
 Erosion
 Weathering
 Volcanism
 Differing Materials
 Faults
Highest possible score  16 points 
Crustal Sinking  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.
Task 17


No Credit



Task 8A  Data Table





A. completed data table

0

1

2


B. data to the nearest tenth

0

1



Task 8B  Graph 




A. axes labeled 
0

1



B. correct units 
0

1



C. appropriate scale 
0

1



D. data correctly plotted 
0

1

2


E. line graph drawn 
0

1



Task 9  Relating Model 
0

1

2


Task 10  Explanation of crust
thickness 
0

1

2


Task 11  Other Factors 
0

1

2

3

Total Score ____________________
(Total possible score  16)
