Maryland Math K.NOS.B.7
The Standard
When counting objects within 20, recognize that each successive number name refers to a quantity that is one larger.
Maryland College and Career Ready Standards for Mathematics (2025) · COUNT TO TELL THE NUMBER OF OBJECTS.
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students count a group of up to 20 objects. When one object is added, they say the next number and understand that the group has one more.
What Mastery Looks Like
- A student counts 19 cubes, adds one, and says there are 20. They point to the new cube to explain why the total changed.
Common Misconceptions
- Some children say the next number word without connecting it to the object that was added. Others count the new object twice or think spreading out the same objects makes more.
How to Assess It
- Put 14 counters on a mat. Ask a student to count them, add one counter, then tell the new total and explain why it changed.
Lesson moves
Ways to Teach It
Give pairs 15 linking cubes; one partner adds a cube while the other names the new total and points to the added cube.
Show 13 dots, then draw one more; ask, 'Why are there 14 dots now, not 15?'
Play Add One: show cards with 8, 14, or 19 dots, add one counter to each group, and name the new total.
Set out 18 paper cups for snack; add one for another student and ask how many cups are ready.
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Printable K.NOS.B.7 Worksheet
A ready-to-print activity worksheet aligned to K.NOS.B.7, with an answer key for the teacher on its own page. No account needed.
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Related Standards
- K.NOS.C.10
Compare two quantities within 20 using greater than, equal to, or less than, with objects, location on number paths, and written numerals.
- K.NOS.B.8
Recognize the number of objects in a set without counting (subitizing) with both unfamiliar patterns within 6 and familiar patterns within 10.
- K.NOS.A.5
Represent a number of objects with a written numeral within 20 (with 0 representing a count of no objects).
- K.NOS.B.6
Use the relationship between numbers and quantities within 20 to count objects with one-to-one correspondence (arranged in a line, a rectangular array, a circle...
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