Item: tCommonDifference2c
Stem:
Find the common difference for the following arithmetic sequence:
0.00, 0.49, 0.98, 1.47, 1.96, . . .
Inputs:
- Enter your answer here:
Key:
- Observable: 0.49.
Score: 1;
Evidence Value: 1.
-
Student:Right!
-
Teacher:The student got this item correct.
- Observable: 2.45.
Score: 0;
Evidence Value: 0.
-
Student:Nice try, but incorrect. You typed the next number in the
sequence, but you should have typed in the common difference, which is 0.49.
-
Teacher:The student got this item incorrect.
- Observable: .
Score: 0;
Evidence Value: 0.
-
Student:Sorry, that was incorrect. To find the common difference
in an arithmetic sequence, figure out the difference between any adjacent pair of numbers.
-
Teacher:The student got this item incorrect.
Metadata:
Item Node: tCommonDifference2c,
Difficulty: 2.
Proficiencies: CommonDifference.