Unit Plan 10 (Grade K Math): Count & Write to 20

Focus: Count by 1s from 0–20, write numerals 0–20, and count on from a given number within 20, connecting spoken numbers, written numerals, and quantities.

Grade Level: K

Subject Area: Mathematics (Counting & Cardinality)

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

I. Introduction

Students extend counting from 0–20, match spoken number names to objects and written numerals, and practice counting on from numbers other than 1. They record totals with numerals 0–20 and explain how they know “how many.”

Essential Questions

• How do I keep track so I count each object once and know how many?
• What helps me count on from a number that isn’t 1?
• How do spoken numbers, numerals, and sets go together?

II. Objectives and Standards

Learning Objectives — Students will be able to:

1. Count by 1s from 0–20 and count on from a given number within 20.
2. Match a set of objects (0–20) to a written numeral (0–20) and say “how many.”
3. Write numerals 0–20 with correct formation and place them next to counted sets.
4. Explain counting strategies (e.g., touch-count, move-and-count, line up objects).

Standards Alignment — CCSS Kindergarten (threaded across the unit)

• K.CC.1 (to 20 in this unit): Count to 100 by ones and tens (focus: 0–20).
• K.CC.2: Count forward beginning from a given number within the known sequence (instead of starting at 1).
• K.CC.3 (0–20): 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).
• Mathematical Practices: MP.6 (precision), MP.7 (look for structure—decades, ten-frame), MP.2 (reasoning) threaded.

Success Criteria — Student Language

• I can count to 20 and count on from numbers like 6 or 12.
• I can write the numerals 0–20 and match them to sets.
• I can tell how many and show it with objects, a ten-frame, and a numeral.