New evidence case

Teacher lab

Select the provenance-cleared public exemplar or enter de-identified work for one signed-integer subtraction problem.

a − b
−12…12

The default prefilled cognisect-ea-001 exemplar is real API input with persisted provenance. It is not a mock or a demo bypass, and free entry remains available.

01

Source and evidence

Choose the provenance tier before entering the observed work.

Educator-authored public exemplar cognisect-ea-001. It is not learner work or a published student record.

Subtraction problem