🧮 Kindergarten · MathK.MD.A.2Unit 9: Measurement & data

Longer and shorter

Google Classroom

🎯 Objective: Students compare the lengths of two objects by lining them up.

Lesson outline

  1. Show why ends must line up.
  2. Compare pencils, crayons, ribbons.
  3. Find something longer and shorter than a cube train.
  4. Exit: draw a line longer than a given line.

Lesson 2 of 5 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

K.MD.A.2

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

🏁 Unit goals

  • Describe length, height and weight
  • Compare two objects and tell which is longer, heavier
  • Sort, count and compare categories

✅ 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

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More lessons in “Measurement & data”

  1. Long, tall, heavy
  2. Longer and shorter
  3. Heavier and lighter
  4. Sort and count
  5. Class surveys

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