CCSS.Math.Content.K.CC.B
The standard
Count to tell the number of objects.
Common Core State Standards for Mathematics
What this standard means
Students need to count objects one at a time and know that the last number they say tells how many are in the group. They should touch, move, or mark each object as they count so nothing gets skipped or counted twice.
Mastery looks like a child counting a scattered set, a line of cubes, or a mixed group and answering “How many?” without recounting every time. Common trouble spots are rushing the number words, losing track of objects, counting the same item twice, and not connecting the final number to the total amount.
Ways to teach it
- Hands-on activity: Give each student 10 counters and an egg carton, then have them place and count counters into the cups one by one.
- Discussion or writing prompt: Show six buttons and ask, “How do you know there are six?” then have students explain their counting strategy.
- Quick assessment: Place 8 cubes in a scattered group and ask each student to count them and tell how many there are.
- Real-world connection: Count classroom items like crayons in a cup, chairs at a table, or crackers on a napkin before snack.
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Related standards
- CCSS.Math.Content.K.MD.B
Classify objects and count the number of objects in each category.
- CCSS.Math.Content.K.CC.A.3
Write numbers from 0 to 20. Represent a number of objects with a written numeral 0-20 (with 0 representing a count of no objects).
- CCSS.Math.Content.K.CC.B.4a
When counting objects, say the number names in the standard order, pairing each object with one and only one number name and each number name with one and only ...
- CCSS.Math.Content.K.CC.B.4b
Understand that the last number name said tells the number of objects counted. The number of objects is the same regardless of their arrangement or the order in...