KIRFs underpin everything we do in Maths. The targets in the booklet are progressive, covering Reception through to Year 6. Each child has individual target they are working on in school and at home. Parental support is vital with embedding these facts at home. The children will be tested each Monday. In order to progress to the next target, they must correctly answer 10 questions within a 30 second time limit. This requires them to know the facts by heart and be able to recall them almost immediately.