Build the ideas that later mathematics depends on
Key Stage 1 is where pupils develop the number relationships, language and representations they will call on for years. LTD helps teachers make those foundations explicit through purposeful whole-class teaching, hands-on investigation and connected independent work.
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The Key Stage 1 focus
Pupils move from early counting and quantity experiences towards a more organised understanding of place value, operations and mathematical relationships. They need regular opportunities to represent ideas, explain what they notice and practise strategies until they become increasingly fluent.
Number comes first, but not alone
Strong number understanding supports calculation, measure, fractions, geometry and data. LTD gives number and place value a central role while keeping the wider curriculum active through practical tasks and meaningful contexts.
Representations used consistently
- Five-frames and ten-frames
- Part-part-whole models
- Number tracks and number lines
- Bead strings and counters
- Base-ten materials
- Arrays and equal groups
- Simple bar and length models
- Shape, measure and data representations
From counting to additive thinking
Pupils first need secure counting, but they should gradually use known quantities, number bonds, doubles, near doubles, make-ten strategies and place value. LTD lessons show teachers how to build this progression rather than expecting the change to happen through practice alone.
Early multiplicative thinking
Equal groups, repeated patterns, arrays, sharing and grouping establish the structure of multiplication and division. Pupils learn facts within this structure so they can use them flexibly later.
Assessment in Key Stage 1
Observation and pupil explanation are important evidence. LTD assessment also uses short check-ups and open tasks to identify what pupils understand, which strategies they rely on and which representation might help next.
Support for Key Stage 1 teams
A shared set of models and language helps Reception, Year 1 and Year 2 teachers build on one another’s work. School access can support joint planning, professional discussion and consistent use of resources across the phase.
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