CCSS.Math.Content.K.CC.B

MathKindergartenCounting and Cardinality

Standard Cluster

Count to tell the number of objects.

Common Core State Standards for Mathematics

Cluster contents

CCSS.Math.Content.K.CC.B is a cluster heading. These are the individual standards under it.

Teacher's field guide

What Students Need to Do: Students match one number word to each object, touching or moving each item once. They use the last number said to name the total, even when objects are rearranged.
What Mastery Looks Like: A student accurately finds totals for up to 20 objects in a line or array and up to 10 in a scattered set. They count out a requested amount and know the final number names the whole set.
Common Misconceptions: Students may skip objects, count one object twice, or say number words out of order. They may think spreading objects apart changes the total. Some continue counting after every object has been matched.
How to Assess It: Show 12 dots in a row and 8 scattered dots. Ask students to mark each dot as they count, then write the total for each set.

Lesson moves

Students draw a numeral card from 1 to 20 and place that many buttons on two ten-frames, touching each button as they count.
Show two equal sets arranged differently, then ask students to write which has more and explain how they know.
Play Count and Cover: students count pictured objects, then cover the matching numeral on a game board.
Set up a snack station where students count the exact number of cups, napkins, and crackers needed for each table.

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