What number sense concept does the Before, After, Between 0–20 worksheet develop?

The worksheet develops positional number knowledge — the understanding that every number has a specific neighbour before it (one less) and after it (one more), and that a number can be identified by its position between two others. This directly supports CCSS.MATH.CONTENT.K.CC.A.2 (count forward from any number) and builds the ordinal number awareness needed for addition and subtraction strategies.

How does knowing what comes before and after a number help kindergartners with addition and subtraction?

The number that comes after N is N+1, and the number before N is N−1. A child who instantly knows the number after 7 is 8 has the foundational knowledge for the 'count on by 1' addition strategy without needing to count from 1. Similarly, knowing the number before 6 is 5 enables the 'count back by 1' subtraction strategy. Before-after-between knowledge therefore directly accelerates arithmetic fact acquisition.

What does 'between' mean in number sequence practice and why is it more challenging than before or after?

Identifying a number 'between' two others requires holding two reference points simultaneously and placing the missing number in relation to both — a greater working memory demand than identifying before (one reference) or after (one reference). Between questions are excellent for building the mental number line that children need for estimation, rounding, and number comparison in later grades.

How can I practise before, after, and between numbers with my kindergartner at home?

Daily calendar time is perfect: 'Today is the 14th — what was yesterday? What will tomorrow be? What day comes between the 13th and the 15th?' Dice games work well too: roll one die, ask 'What number comes after this one? What comes before?' These brief, frequent interactions make number neighbour knowledge automatic through natural daily practice rather than dedicated study sessions.