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🧮 1st Grade · Math1.OA.D.8Unit 5: The equal sign & true equations

Unknowns in every place

Google Classroom

🎯 Objective: Students find the unknown in any position (? − 3 = 5, 8 = ? + 2).

Lesson outline

  1. Solve three equations with the box in different places.
  2. Model with a part-part-whole mat.
  3. Write equations for a partner to solve.
  4. Exit: ? = 10 − 4.

Lesson 3 of 4 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

1.OA.D.8

Common Core State Standards for Mathematics, Grade 1 — typical US scope & sequence

🏁 Unit goals

  • Understand that = means “the same as”
  • Decide whether equations are true or false

✅ 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: Add & subtract within 20🖨️ Worksheet: Addition Within 20🖨️ Worksheet: Subtraction Within 20📚 All 1st Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add 1st Grade 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 “The equal sign & true equations”

  1. What the equal sign means
  2. True or false?
  3. Unknowns in every place
  4. Equal sign games

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