In this unit, students will begin to develop their understanding of the number system, starting with rote counting within 5 and extending it to at least 20. Counting begins with this unit and students are given many opportunities to practice throughout the year so they can become fluent in the counting sequence, enabling them to focus on the pairings involved when counting objects. Students learn to count a set of up to 10 objects to develop onetoone correspondence and cardinality. Students connect the last number said with the quantity of the set, rather than the object itself. This unit focuses on students organizing objects into lines to count efficiently. More difficult arrangements will be addressed in subsequent units.
Content Standards: K.CC.A.1, K.CC.B.4a, K.CC.B.4b
Practice Standards: S.MP.2, S.MP.6
Unit at a Glance
Lesson 1 (1 day)
Key Concept 1: Numbers exist in a sequence that does not change, and can be counted.

Lesson objective: Understands that numbers exist in a sequence that does not change, and they can be counted. Students bring varied prior knowledge of numbers from their experiences before kindergarten. This prior knowledge is extended to rote counting ...
Lesson 2 (1 day)
Key Concept 2: Each item in a collection must be counted once and only once.

Lesson objective: Understand that when counting a collection, each item must be counted once and only once. Students bring prior knowledge of rote counting within 20 from K.CC.A.1. This prior knowledge is extended to counting with onetoone corresponde...
Lesson 3 (1 day)
Key Concept 3: The last number name used names the quantity of objects in the set.

Lesson objective: Understand that the last number name said when counting the objects in a collection names the quantity of objects in that collection. Students bring prior knowledge of counting from K.CC.B.4a. This prior knowledge is extended to unders...
Lessons 410 (7 days)
Key Concept 1: Numbers exist in a sequence that does not change, and can be counted.
Key Concept 2: Each item in a collection must be counted once and only once.
Key Concept 3: The last number name used names the quantity of objects in the set.

Lesson objective: Count out a given number of objects. This lesson helps to build fluency with counting objects within 5. Blocks and five frames are used here because they support the development of counting skills and help students develop a visual ima...

Lesson objective: Apply understanding of counting to solve problems. This lesson provides an opportunity for students to apply their knowledge and understanding of counting objects within 5 to a reallife situation. Students are asked to help a teacher ...

Lesson objective: Count to find how many items there are in a collection up to 10 items. This lesson helps to build fluency with counting. Balloons and other common objects are used here because they provide a familiar context with which to practice cou...

Lesson objective: Count out a given number of objects. This lesson helps to build fluency with counting objects within 5. Blocks and five frames are used here because they support the development of counting skills and help students develop a visual ima...

Lesson objective: Count out a given number of objects. This lesson helps to build fluency with counting objects within 10. Counters and ten frames are used here because they support the development of counting skills and help students develop a visual i...

Lesson objective: Apply understanding of counting to solve problems. This lesson provides an opportunity for students to apply their knowledge and understanding of counting objects within 10 to a reallife situation. Students are asked to help a teacher...

Lesson objective: Count numbers in sequence up to 20, starting at 1. This lesson helps to build a procedural skill with counting numbers in order up to 20. Ten frames are used here because they support the development of a visual image to support the nu...