Thinkabara

🧮 5th Grade · Math5.G.B.4Unit 12: Classifying 2D figures

Quadrilateral family tree

Google Classroom

🎯 Objective: Students build a hierarchy of quadrilaterals.

Lesson outline

  1. Sort quadrilaterals by properties.
  2. Build a hierarchy: quadrilateral → trapezoid/parallelogram → rectangle/rhombus → square.
  3. Discuss.
  4. Exit: is every square a rhombus?

Lesson 2 of 3 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

5.G.B.4

Common Core State Standards for Mathematics, Grade 5 — typical US scope & sequence

🏁 Unit goals

  • Classify figures in a hierarchy by their properties

✅ 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: Coordinate plane📚 All 5th Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

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More lessons in “Classifying 2D figures”

  1. Triangles
  2. Quadrilateral family tree
  3. Always, sometimes, never

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