Thinkabara

🧮 2nd Grade · Math2.NBT.A.1Unit 3: Place value to 1,000

Hundreds, tens and ones

Google Classroom

🎯 Objective: Students understand that 100 is ten tens and build three-digit numbers.

Lesson outline

  1. Bundle 10 ten-rods into a hundred flat.
  2. Build 243 with blocks.
  3. Partners build numbers from cards.
  4. Exit: what does the 4 in 243 mean?

Lesson 1 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

2.NBT.A.1

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

🏁 Unit goals

  • Understand hundreds, tens and ones
  • Read and write numbers to 1,000 in standard, word and expanded form
  • Compare three-digit numbers

✅ 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: Place value to 1,000🖨️ Worksheet: Two-Digit Addition Within 100🖨️ Worksheet: Two-Digit Subtraction Within 100🔢 Random number generator📚 All 2nd Grade skills🎮 Learning games⚡ Capy Live class quiz

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More lessons in “Place value to 1,000”

  1. Hundreds, tens and ones
  2. Counting within 1,000
  3. Three ways to write a number
  4. Compare three-digit numbers
  5. 10 more, 100 more

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