Major Cluster

Count to 100 by ones and by tens.

10 Lessons

26 Activities

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

5 Lessons

103 Activities

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).

21 Lessons

29 Activities

Major Cluster

Understand the relationship between numbers and quantities; connect counting to cardinality.

0 Lessons

10 Activities

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 one object.

27 Lessons

70 Activities

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 which they were counted.

28 Lessons

27 Activities

Understand that each successive number name refers to a quantity that is one larger.

12 Lessons

43 Activities

Count to answer "how many?" questions about as many as 20 things arranged in a line, a rectangular array, or a circle, or as many as 10 things in a scattered configuration; given a number from 1-20, count out that many objects.

33 Lessons

68 Activities

Major Cluster

Identify whether the number of objects in one group is greater than, less than, or equal to the number of objects in another group, e.g., by using matching and counting strategies.

14 Lessons

41 Activities

Compare two numbers between 1 and 10 presented as written numerals.

9 Lessons

11 Activities