Uses the language of ‘more’ and ‘fewer’ to compare two sets of objects.
Observe whether the child: uses the language of ‘more’ and ‘fewer’ to compare two sets of objects.
What it looks like
Three ways this behaviour shows up as a child grows. Each level includes everyday moments to watch for.
Emerging
Just starting
The child sometimes uses "more" correctly when the difference is obvious or the sets are small, but is inconsistent with "fewer". They often need to count both sets or rely on adult prompts to decide.
What you might see
Looks at two sets and says "more" or "fewer" randomly, then does not change their answer when the sets are shown side-by-side.
Uses "more" only as a request ("more please") and cannot apply it to compare two groups of objects.
Correctly says one set has "more" when one group is clearly larger (e.g., 2 vs 8), but for 4 vs 5 guesses and does not check.
Uses "more" correctly but uses "fewer" incorrectly (e.g., says the larger set has "fewer").
Expected
On track
The child uses "more" and "fewer" appropriately to compare two small sets, especially when supported by lining up or matching items one-to-one. They may still need counting to confirm when sets are close in size.
What you might see
Lines up two sets of counters and says "This one has more" because one row has an extra counter at the end.
Counts both sets to decide, then states "That one has fewer" after comparing totals (with a prompt to compare numbers).
Exceeding
Going further
The child consistently uses "more" and "fewer" to compare sets across contexts, including when items are arranged differently. They can justify the comparison by counting or by one-to-one matching.
What you might see
Compares two sets arranged differently (a tight cluster vs a line) and still uses "more"/"fewer" correctly after counting or matching.
Explains a comparison: "You have 6 and I have 5, so you have more and I have fewer."
Suggests making sets equal: "You have more—give me one so we have the same," then checks by counting.
In a game, predicts changes: "If I add one to mine, I’ll have more than you," and then verifies by comparing totals.
Try this at home
Small everyday moments where you can notice this behaviour without setting up anything special.
Snack sharing: put two small piles of food on plates and ask, "Which plate has more? Which has fewer? How do you know?"
Play: build two towers of blocks and ask your child to decide which has more blocks; then mix the arrangement and see if they still compare accurately.
Story time: point to two groups of pictures on a page and ask, "Are there more dogs or fewer dogs than cats?"
Bath: float two groups of bath toys (e.g., 3 ducks and 5 cups) and ask your child to tell you which group has more/fewer, then check by counting together.
Transitions: when putting away items, ask, "Do we have more socks or fewer socks than shoes here?" and see if your child chooses a strategy (counting or pairing).
Connected behaviours
Behaviours that scaffold, follow, or co-emerge with this one.
The framework source and supporting developmental research.
Framework source
Development Matters in the EYFS (2012), Mathematics: Numbers.
The construct is stated as an observable behaviour for comparing quantities within early number development.
Developmental research
Gelman, R., & Gallistel, C. R. (1978). The Child’s Understanding of Number. Harvard University Press.
Comparing sets is supported by accurate counting and using the resulting cardinal numbers to determine which set is larger.
Five-level rubric (detailed)ShowHide
The full progression underlying the three levels above. Used by the platform’s reasoning agent when planning activities and observations.
Not Yet
The child does not yet use comparative quantity language accurately. They may use "more" for preference ("I want more") without relating it to set size, or label sets incorrectly.
Looks at two sets and says "more" or "fewer" randomly, then does not change their answer when the sets are shown side-by-side.
Uses "more" only as a request ("more please") and cannot apply it to compare two groups of objects.
Emerging
The child sometimes uses "more" correctly when the difference is obvious or the sets are small, but is inconsistent with "fewer". They often need to count both sets or rely on adult prompts to decide.
Correctly says one set has "more" when one group is clearly larger (e.g., 2 vs 8), but for 4 vs 5 guesses and does not check.
Uses "more" correctly but uses "fewer" incorrectly (e.g., says the larger set has "fewer").
Developing
The child uses "more" and "fewer" appropriately to compare two small sets, especially when supported by lining up or matching items one-to-one. They may still need counting to confirm when sets are close in size.
Lines up two sets of counters and says "This one has more" because one row has an extra counter at the end.
Counts both sets to decide, then states "That one has fewer" after comparing totals (with a prompt to compare numbers).
Secure
The child consistently uses "more" and "fewer" to compare sets across contexts, including when items are arranged differently. They can justify the comparison by counting or by one-to-one matching.
Compares two sets arranged differently (a tight cluster vs a line) and still uses "more"/"fewer" correctly after counting or matching.
Explains a comparison: "You have 6 and I have 5, so you have more and I have fewer."
Reflexive
The child applies comparison language flexibly, including in problem solving (e.g., making sets equal or predicting changes after adding/removing). They can explain strategies and support peers in comparing fairly.
Suggests making sets equal: "You have more—give me one so we have the same," then checks by counting.
In a game, predicts changes: "If I add one to mine, I’ll have more than you," and then verifies by comparing totals.
