Item: tTableExtendArithmetic3b
Stimulus:
| Term Number |
Term Value |
| 1 |
8 |
| 3 |
A |
| B |
16 |
| 8 |
22 |
Stem:
The numbers in the table represent terms in an arithmetic sequence.
Complete the table by filling in the cells for A and B.
Hint: the term numbers are not listed consecutively.
Inputs:
- Enter the value for A:
- Enter the value for B:
Key:
- Observable: 12,
5.
Score: 1;
Evidence Value: 1.
-
Student:Right!
-
Teacher:The student got this item correct.
- Observable: .
Score: 0;
Evidence Value: 0.
-
Student:Sorry, that was incorrect. A good way to solve problems like this is to
write out all the term numbers, and then try to fill in the corresponding
term values by finding
the common difference. The common difference here is 2, and the correct value
for A is 12 and for B is 5.
-
Teacher:The student got this item incorrect.
Metadata:
Item Node: tTableExtendArithmetic3b,
Difficulty: 3.
Proficiencies: TableArithmetic,
ExtendArithmetic.