List of Skills by Age

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1-2 Months

Although research exists for documenting number sense in the first year of life. These are laboratory studies that cannot be replicated in home visits or centers. For this reason, skills the first year of life have been omitted.

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2-4 Months

Although research exists for documenting number sense in the first year of life. These are laboratory studies that cannot be replicated in home visits or centers. For this reason, skills the first year of life have been omitted.

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4-6 Months

Although research exists for documenting number sense in the first year of life. These are laboratory studies that cannot be replicated in home visits or centers. For this reason, skills the first year of life have been omitted.

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6-8 Months

Although research exists for documenting number sense in the first year of life. These are laboratory studies that cannot be replicated in home visits or centers. For this reason, skills the first year of life have been omitted.

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8-10 Months

Although research exists for documenting number sense in the first year of life. These are laboratory studies that cannot be replicated in home visits or centers. For this reason, skills the first year of life have been omitted.

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10-12 Months

Although research exists for documenting number sense in the first year of life. These are laboratory studies that cannot be replicated in home visits or centers. For this reason, skills the first year of life have been omitted.

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12-15 Months

Says numbers 1,2 but with no meaning

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15-18 Months

Knows a few random numbers

Recites numbers with no meaning

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18-21 Months

Uses one-to-one correspondence when counting two objects

Demonstrates basic understanding of one-to-one correspondence, by putting one or more items into separate compartments

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21-24 Months

Counts to two

Counts using several number words, but not necessarily in order

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24-27 Months

Counts first three count words

Demonstrates one-to-one correspondence (give one to each person), but doesn’t know amount

Understands the concept of one

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27-30 Months

Counts up to 4 items in a collection

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30-33 Months

Verbally counts to 10 with some one-to-one correspondence, but when counting objects loses track of one-to-one correspondence or the next number

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33-36 Months

Counts using fingers, but loses track of numbers

Rote counts 1-10 consistently

Counts 1-5 items with one-to-one correspondence

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36-42 Months

Keeps one-to-one correspondence of from 3 to 5 items, but doesn’t know “how many in total”

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42-48 Months

Counts on from a number if they count up to that number first

Counts up to 10 and knows “how many” up to 5

Understands that the last number stated is the total

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48-54 Months

Counts structured arrangement up to 9 and knows “how many”

Counts 1-30 with emphasis on the counting pattern (e.g., Twenty-one, with parallel to 1,2,3)

Writes or draws to represent 1 through 10

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54-60 Months

Recognizes errors in counting

Counts backward from 10

“Counts on” from a given number without starting at 1

Knows the number before and the number after a number but has to count from 1 to figure it out

Counts to 100 by ones (with emphasis on the pattern)

Counts accurately to 10