As a school, we have worked to identify key instant recall facts or KIRFs. These KIRFS are key pieces of declarative knowledge that we expect our children to learn at each stage in their learning. Declarative knowledge is static in nature and consists of facts, formulae, concepts, principles and rules. It can include the facts of number, time and space. KIRFs are essential for progress in mathematics as their accquisition ensures subsequent learning will be successful.