Thinkabara

🧮 Kindergarten · MathK.OA.A.2Unit 6: Subtraction within 10

Add or subtract?

Google Classroom

🎯 Objective: Students decide whether a story needs adding or subtracting and solve it.

Lesson outline

  1. Act out a joining story and a take-away story.
  2. Ask: did the group get bigger or smaller?
  3. Sort story cards into add and subtract, then solve.
  4. Exit: solve one of each.

Lesson 5 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.2

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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