Order by Size with Post Office

A size-ordering worksheet for preschoolers: a child arranges post from smallest to biggest, building an orderly row. Sequencing the whole set — which a letter, a stamp and a parcel comes next as the row grows? — asks a child to hold the order in mind, a step past comparing a pair. It needs no letters and no numbers, just a set to place in size sequence end to end.

Putting things in order by size is a child's first experience of arranging a whole set along a sequence. Lining up post from smallest to biggest asks a preschooler to look across the entire row — not just two items — and decide what comes next as the sizes climb. That ordering is a richer move than a single comparison: it builds the sense of a sequence, each item one step larger than the last.

Children love building a neat row that climbs from smallest to biggest, and finishing the size order feels satisfying. When this is easy, put the sizes in order in order by size with reptiles and amphibians, or try order by size with summer. You can also browse every size-ordering worksheet or the whole preschool collection — each sheet prints cleanly or plays online for free, and the more a child orders things by size, the surer their sense of sequence grows.