Item: tExtendArithmetic3a
Stem:
Extend the following sequence by giving the next two terms:
1.13, 1.31, 1.49, 1.67, 1.85, ...
Inputs:
- Enter your answer here:
- and
Key:
- Observable: 2.03,
2.21.
Score: 1;
Evidence Value: 1.
-
Student:Right! You correctly generated the next two terms in the arithmetic sequence.
-
Teacher:The student got this item correct.
- Observable: .
Score: 0;
Evidence Value: 0.
-
Student:Sorry, that's incorrect. The sequence given in the problem, 1.13, 1.31, 1.49, 1.67, 1.85,. . . is an arithmetic sequence. In this case, there is a common difference of .18 between terms. To get any term, add .18 to the previous term.
-
Teacher:The student got this item incorrect.
Metadata:
Item Node: tExtendArithmetic3a,
Difficulty: 3.
Proficiencies: ExtendArithmetic.