Thinkabara

🧮 2nd Grade · Math2.G.A.3Unit 12: Shapes & equal shares

Equal shares look different

Google Classroom

🎯 Objective: Students see that equal shares of the same whole need not have the same shape.

Lesson outline

  1. Cut squares into halves different ways.
  2. Prove they are equal.
  3. Gallery walk.
  4. Exit: two different halves of a square.

Lesson 4 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

2.G.A.3

Common Core State Standards for Mathematics, Grade 2 — typical US scope & sequence

🏁 Unit goals

  • Recognize and draw shapes with given attributes
  • Partition rectangles into rows and columns
  • Split shapes into halves, thirds and fourths

✅ 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 2nd Grade skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

Add 2nd Grade Math to your free Lesson Planner: enter your timetable once and every period shows the next lesson, skipping weekends and school breaks.

Add to my planner See the year’s sequence

More lessons in “Shapes & equal shares”

  1. Polygons
  2. Partition rectangles
  3. Halves, thirds and fourths
  4. Equal shares look different

Something to improve in this lesson? Tell us.