Thinkabara

🧮 4th Grade · Math4.MD.A.3Unit 10: Measurement conversions

Area and perimeter formulas

Google Classroom

🎯 Objective: Students apply the area and perimeter formulas to real-world problems.

Lesson outline

  1. Fence a 12 ft by 8 ft garden; carpet a 10 ft by 14 ft room.
  2. Apply A = l × w and P = 2l + 2w; find a missing side.
  3. Practice.
  4. Exit: one problem.

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

4.MD.A.3

Common Core State Standards for Mathematics, Grade 4 — typical US scope & sequence

🏁 Unit goals

  • Convert larger units to smaller units in one system
  • Solve problems with area and perimeter formulas

✅ 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

📚 All 4th Grade skills🎮 Learning games⚡ Capy Live class quiz

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More lessons in “Measurement conversions”

  1. Customary length
  2. Customary weight and capacity
  3. Metric units
  4. Time conversions
  5. Area and perimeter formulas
  6. Line plots with fractions

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