| A-P |
Change Unknown |
|
| Starting set value is known and the new set value that is joined or separated is not known, and the otal of the new set is known. |
Compare / No Action Problem Type |
| The sets in question remain intact. There is no “joining” or “separation”.
Answers the questions: “Who has more?”; “How many more?” |
Difference Unknown |
| Set A and B quantities are known. Set A is larger than B. Set A and B are compared. |
Join Problem Type |
| Two or more sets are joined or combined to make a new total set. |
No Action |
problems there are two types of no action problems comparison situations and partitioning. They are characterized by having no temporal frame of reference. There is no time line of events, nothing changes over time. |
Partition Problem Type |
The sets in question remain intact. There is no joining or separation. Involves separating or partitioning sets of objects into parts. |
Part Unknown |
One part is known, one part is unknown and the total is known. |
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