# Number Sense Maths Principle 7

Teaching derived fact strategies leads not only to fluency in number facts, but also to an understanding of number relationships

## Research Finding

Derived fact strategy approaches lead to children becoming more confident in their number facts, and the strategies in themselves can continue to be drawn on going forward [15,16]. Once children have realised they can calculate 8 + 5 by thinking 8 + 2 + 3, then can apply this approach to larger calculations. For example, 98 + 36 could be solved by thinking ’98 + 2 + 34’. The type of thinking that this approach teaches has long term benefits for children.

## Application to Number Sense Maths

Number Sense Maths has a defined set of 12 calculation strategies at the core of the programme. The strategies are explicitly taught with relevant groups of facts through Stage 3-5. Stage 6 then focuses on extending the application of these strategies to calculations involving large numbers.

## References

[15] THORNTON, C.A., 1978. Emphasizing Thinking Strategies in Basic Fact Instruction The Journal for Research in Mathematics Education, 9 (3) 214-227.

[16] ASKEW, M, BIBBY, T & BROWN, M 2001, Raising attainment in primary number sense: from counting to strategy. BEAM Education, London.