This article for primary teachers expands on the key ideas which underpin early number sense and place value, and suggests activities to support learners as they get to grips with these ideas.
Helen Joyce interviews the neuropsychologist Brian Butterworth
whose research has shown that we are all born with a "built-in"
sense of cardinal number.
Once a basic number sense has developed for numbers up to ten, a
strong 'sense of ten' needs to be developed as a foundation for
both place value and mental calculations.