Thinkabara

🧮 3rd Grade · Math3.OA.B.5Unit 3: Properties & multiplication facts

Commutative property

Google Classroom

🎯 Objective: Students see that factors can switch places (3 × 6 = 6 × 3).

Lesson outline

  1. Build a 3 × 6 array of tiles, then turn the board 90°: students write 3 × 6 = 18 and 6 × 3 = 18.
  2. Shade a 10 × 10 multiplication chart along the diagonal: every fact above the line has a turn-around below it, so there are only half as many facts to learn.
  3. Partners draw arrays for 2 × 7, 4 × 5 and 9 × 3 and write both equations for each.
  4. Exit: write the turn-around for 4 × 9 and draw the array that proves they are equal.

Lesson 1 of 7 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

3.OA.B.5

Common Core State Standards for Mathematics, Grade 3 — typical US scope & sequence

🏁 Unit goals

  • Use commutative, associative and distributive properties to multiply
  • Fluently multiply and divide within 100

✅ 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: Multiplication & division within 100🖨️ Worksheet: Multiplication Facts 2–10📚 All 3rd Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add 3rd 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 “Properties & multiplication facts”

  1. Commutative property
  2. Facts of 3, 4 and 6
  3. Distributive property
  4. Facts of 7, 8 and 9
  5. Associative property
  6. 0 and 1 rules
  7. Fact fluency check

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