**Can they tell you what comes after 39… but not what one more than 39 is? A targeted Year 1 intervention for children who can often count in sequence but don’t yet fully understand the ...

Find one more and one less, from acorns in ten-frames all the way up to 100. The Extending page targets the tricky crossing-a-ten numbers (39 → 40, 70 → 69) with a mistake to spot. The sheet comes in ...