Unit Plan 29 (Grade K Math): Read/Write 0–20 & Match Sets

Focus: Write any numeral 0–20, read numerals accurately, and create matching sets using one-to-one counting and cardinality checks.

Grade Level: K

Subject Area: Mathematics (Counting & Cardinality)

Total Unit Duration: 5 sessions (one week), 30–40 minutes per session

I. Introduction

Students connect numerals to quantities up to 20. They practice reading a numeral, writing it with correct formation, and matching a set of objects to the numeral (and vice versa). Emphasis is on one-to-one correspondence, saying the last number to tell “how many,” and verifying with tools (e.g., ten-frames).

Essential Questions

• How do I know a numeral and a set go together?
• What does the last number I say tell me about a set?
• How do tools like ten-frames and a number line help me check my work?

II. Objectives and Standards

Learning Objectives — Students will be able to:

1. Read numerals 0–20 and say their names accurately.
2. Write numerals 0–20 with correct formation and orientation.
3. Match a numeral to a set (arranged or scattered) using one-to-one counting.
4. Create a set to match a given numeral and explain the total using cardinality (“There are __.”).

Standards Alignment — CCSS Kindergarten (threaded across the unit)

• K.CC.3: Write numbers from 0 to 20; represent a number of objects with a written numeral 0–20.
• K.CC.4a–c: Understand the relationship between numbers and quantities; one-to-one; cardinality; each successive number is one more.
• K.CC.5: Count to answer “how many?” up to 20 items, arranged or scattered.
• Mathematical Practices: MP.6 (precision), MP.7 (structure), MP.8 (repeated reasoning), MP.1 (perseverance).

Success Criteria — Student Language

• I can read any numeral 0–20.
• I can write numerals 0–20 correctly.
• I can count a set with one-to-one and say the last number to tell “how many.”
• I can make a set to match a numeral and check it with a ten-frame or number line.