Item: tCommonDifference3a
Stem:
Find the common difference for the following arithmetic sequence:
0.38, 0.86, 1.34, 1.82, 2.30, ...
Inputs:
- Enter your answer here:
Key:
- Observable: 0.48.
Score: 1;
Evidence Value: 1.
-
Student:Right!
-
Teacher:The student got this item correct.
- Observable: 2.78.
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 0.48.
-
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: tCommonDifference3a,
Difficulty: 3.
Proficiencies: CommonDifference.