Thinkabara

🧮 3rd Grade · Math3.MD.A.1Unit 9: Time, liquid volume & mass

Elapsed time

Google Classroom

🎯 Objective: Students find elapsed time with a number line.

Lesson outline

  1. Model 2:15 to 3:40 on an open time line: jump to 3:00, then 40 minutes.
  2. Practice with a school schedule.
  3. Solve word problems.
  4. Exit: a movie starts at 4:20 and lasts 1 h 35 min — when does it end?

Lesson 2 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

3.MD.A.1

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

🏁 Unit goals

  • Tell time to the minute and find elapsed time
  • Measure liquid volume and mass in liters, grams and kilograms

✅ 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: Area & perimeter🕒 Interactive clock🕒 Hours calculator📚 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.

Add to my planner See the year’s sequence

More lessons in “Time, liquid volume & mass”

  1. Time to the minute
  2. Elapsed time
  3. Liquid volume
  4. Mass

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