Thinkabara

🧮 Kindergarten · MathK.OA.A.3Unit 6: Subtraction within 10

Taking apart: part and whole

Google Classroom

🎯 Objective: Students take a whole apart into two parts and record it with a drawing or equation.

Lesson outline

  1. Hide some of 8 counters under a cup: how many are hiding?
  2. Use a part-part-whole mat to show the whole and parts.
  3. Partners play the hiding game with 5–10 counters.
  4. Exit: 9 cubes, 4 are red — how many are blue?

Lesson 4 of 6 in this unit. In the Lesson Planner this lesson takes 1–3 class periods depending on your timetable: day 1 introduce & model, then practice, small-group reteach and a quick check.

📐 Standard

K.OA.A.3

Common Core State Standards for Mathematics, Kindergarten — typical US scope & sequence

🏁 Unit goals

  • Show subtraction as taking apart or taking from
  • Solve take-from story problems within 10

✅ Check for understanding

End with the exit ticket in the outline. Sort answers into got it / almost / not yet and start the next lesson with a 5-minute reteach for the “not yets”.

Practice & resources on Thinkabara

🎯 Practice: Operations & Algebraic Thinking📚 All Kindergarten skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add Kindergarten Math to your free Lesson Planner: enter your timetable once and every period shows the next lesson, skipping weekends and school breaks.

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More lessons in “Subtraction within 10”

  1. Taking away
  2. Minus and equals
  3. Subtraction story problems
  4. Taking apart: part and whole
  5. Add or subtract?
  6. Fluency within 5

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