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Starch and Sugar Testing 2
Rubric
Contributed by: New York State Alternative Assessment in Science Project (NYSED)

Maximum Score - 11 Points

Question 3. Experimental Procedures 2 points total

Point Criteria:

  • Allow 1 point for a correct testing method for a sugar.
  • Allow 1 point for a correct testing method for a starch.

Acceptable responses include:

- Use glucose test strips in all three solutions. (1 point)

- Use Iodine solution in all three solutions. (1 point)

- Record and compare which are sugar and /or starch.

Or

- Use glucose strips to test for sugar. (1 point)

- Use iodine solution to test for starch. (1 point)
Question 5. Glucose Strip and Iodine Solution Data Table 2 points total

Indicator

Solution A

Solution B

Solution C

Glucose Test Strips

green

green

yellow or no change

Iodine Solution

orange or no change

orange or no change

Blue, black or brown

Point Criteria:

  • Allow 1 point for correct data for sugar method according to student plan (see question #3).
  • Allow 1 point for correct data for starch method according to student plan (see question #3).
Question 7. Identify Sugar Solutions 3 points total

Point Criteria:

  • Allow 1 point for identifying both sugar solutions as A and B.

- Accept any student’s response correctly based on his/her data.
  • Allow 2 points for an explanation relating student data to background information.

- Solutions A and B turned the test strips green which indicates sugar.

- Allow only 1 point if the student states the background information without relating it to his/her data.

Question 8. Identify Starch Solutions 3 points total

Point Criteria:

  • Allow 1 point for identifying starch solution as C.

- Accept any student’s response correctly based on his/her data.
  • Allow 2 points for an explanation relating student data to background information.

- Solution C turned the iodine solution black which indicates starch.

- Allow only 1 point if the student states the background information without relating it to his/her data.

Highest possible score - 11 points


 

 

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