30–50 monthsNumerical PatternsShape, Space and Measure (no distinct 2021 ELG)
Orders two items by weight or capacity.
Observe whether the child: orders two items by weight or capacity.
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 makes a correct heavier/lighter or fuller/emptier choice when differences are very obvious, but is inconsistent or changes their mind quickly. They rely on adult cues or repeated demonstrations to succeed.
What you might see
When asked which of two containers holds more, the child points without trying to fill or compare them.
The child chooses the “bigger-looking” container even after seeing it holds less when poured.
When holding two items, the child does not lift both to compare and gives an answer that changes each time.
The child correctly identifies a very heavy item vs a very light one after lifting both, but is inconsistent on the next attempt.
In water play, the child notices one cup is fuller but cannot order two cups reliably without adult prompting.
The child says “that one” while looking at the adult’s face for confirmation rather than checking the items.
Expected
On track
The child orders two items by weight or capacity in familiar play (e.g., water/sand, containers, shopping role play) using direct handling (lifting/pouring) and simple language or gestures. They may still be unsure when differences are subtle or when the container shape is misleading.
What you might see
The child lifts two objects (e.g., two bags) and places the heavier one first when asked to order them.
The child fills two containers and then points to the one that is more full when asked which holds more.
The child pours from one container to another to check which holds more with a brief verbal prompt (e.g., “Let’s see”).
Exceeding
Going further
The child consistently orders two items by weight or capacity across contexts by using sensible checks (lifting both, pouring to compare, noticing how full). They can explain their choice in simple everyday terms (e.g., “this one is heavier”, “this holds more”).
What you might see
The child orders two containers by capacity by filling them to the top and comparing without being told to do that step.
The child orders two items by weight by lifting each with one hand and stating which is heavier.
The child re-checks by lifting again if unsure, then settles on an order and sticks with it.
The child suggests a method (“Let’s pour it in the same cup”) to compare capacity when a peer disagrees.
The child orders two different-shaped containers by capacity correctly after testing rather than guessing by height alone.
The child independently uses weight/capacity ordering in role play (e.g., chooses the larger container for ‘more soup’).
Try this at home
Small everyday moments where you can notice this behaviour without setting up anything special.
In the kitchen, give two empty containers (e.g., a small cup and a larger jug) and ask: “Which one holds more?” Let your child choose how to check (fill/pour/lift).
During bath or water play, offer two cups and say: “Can you put the bigger one first?” Notice if your child tests capacity by filling or pouring.
At tidy-up, put two small bags with different items inside and ask: “Which bag is heavier?” Watch if they lift both to compare before deciding.
At snack time, show two bottles/cups with different amounts and ask: “Which one is more full?” Observe whether they order correctly and stick with it.
In outdoor play (sandpit), ask: “Can you find the bucket that holds more sand?” See if they compare by filling rather than choosing by colour.
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) (DM2012) — Mathematics: Shape, space and measure (age band statements).
The framework positions early comparison and ordering as observable behaviours arising in everyday practical activity (water, sand, lifting, carrying).
Developmental research
Piaget, J. (1952). The Origins of Intelligence in Children.
The progression from trial-and-error action to intentional comparison supports using direct manipulation (lifting/pouring) as evidence of emerging measurement thinking.
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 attempt to compare or order by heavier/lighter or fuller/emptier and may choose items based on appearance or preference. They may not understand what the adult is asking when asked to decide which is heavier or holds more.
When asked which of two containers holds more, the child points without trying to fill or compare them.
The child chooses the “bigger-looking” container even after seeing it holds less when poured.
When holding two items, the child does not lift both to compare and gives an answer that changes each time.
Emerging
The child sometimes makes a correct heavier/lighter or fuller/emptier choice when differences are very obvious, but is inconsistent or changes their mind quickly. They rely on adult cues or repeated demonstrations to succeed.
The child correctly identifies a very heavy item vs a very light one after lifting both, but is inconsistent on the next attempt.
In water play, the child notices one cup is fuller but cannot order two cups reliably without adult prompting.
The child says “that one” while looking at the adult’s face for confirmation rather than checking the items.
Developing
The child orders two items by weight or capacity in familiar play (e.g., water/sand, containers, shopping role play) using direct handling (lifting/pouring) and simple language or gestures. They may still be unsure when differences are subtle or when the container shape is misleading.
The child lifts two objects (e.g., two bags) and places the heavier one first when asked to order them.
The child fills two containers and then points to the one that is more full when asked which holds more.
The child pours from one container to another to check which holds more with a brief verbal prompt (e.g., “Let’s see”).
Secure
The child consistently orders two items by weight or capacity across contexts by using sensible checks (lifting both, pouring to compare, noticing how full). They can explain their choice in simple everyday terms (e.g., “this one is heavier”, “this holds more”).
The child orders two containers by capacity by filling them to the top and comparing without being told to do that step.
The child orders two items by weight by lifting each with one hand and stating which is heavier.
The child re-checks by lifting again if unsure, then settles on an order and sticks with it.
Reflexive
The child applies ordering by weight/capacity flexibly in new situations, chooses an appropriate strategy (lift, pour, compare), and can support a peer by suggesting how to check. They can generalise beyond toys to everyday decisions (e.g., which bag is heavier, which cup is bigger).
The child suggests a method (“Let’s pour it in the same cup”) to compare capacity when a peer disagrees.
The child orders two different-shaped containers by capacity correctly after testing rather than guessing by height alone.
The child independently uses weight/capacity ordering in role play (e.g., chooses the larger container for ‘more soup’).
