CCSS.Math.Content.K.CC.A

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

• CCSS.Math.Content.K.CC.A.1

  Count to 100 by ones and by tens.

• CCSS.Math.Content.K.CC.A.2

  Count forward beginning from a given number within the known sequence (instead of having to begin at 1).

• 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).

01

What Students Need to Do

Students say number names in order to 100 by ones and tens, including when starting at a given number. They write numerals from 0 to 20 to show quantities.

02

What Mastery Looks Like

Students count to 100 by ones and tens and can start from a number other than one. They write numerals from 0 to 20 and match each numeral to a set of objects.

03

Common Misconceptions

Students may skip numbers or get stuck when crossing a decade, such as moving from 29 to 30. They may reverse written numerals or confuse teen numbers like 13 and 30.

04

How to Assess It

Ask each student to count from 36 to 45, then write the numerals for zero, thirteen, and twenty.

1. 01

   Give students number cards from 0 to 20 to arrange on the floor, then have them walk the line and name each number.

2. 02

   Ask, “What comes after 29, 39, and 49?” Have students explain the pattern with words or drawings.

3. 03

   Play Count On by drawing a card from 1 to 90 and saying the next five numbers aloud.

4. 04

   Use a classroom calendar to count completed school days, name the next date, and count forward to an upcoming event.

• CCSS.Math.Content.1.NBT.A

  Extend the counting sequence.

• CCSS.Math.Content.2.NBT.A.3

  Read and write numbers to 1000 using base-ten numerals, number names, and expanded form.

• 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 ...