Thinkabara

🧮 Kindergarten · MathK.CC.B.5Unit 7: Counting to 100 by ones and tens

Counting collections

Google Classroom

🎯 Objective: Students count a large collection (up to 20) and record how they counted.

Lesson outline

  1. Give each pair a bag of 12–20 objects.
  2. Ask them to organize before counting (lines, groups of 5 or 10).
  3. Share strategies; which way was easiest to check?
  4. Exit: record your count with numbers or a picture.

Lesson 5 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.CC.B.5

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

🏁 Unit goals

  • Count to 100 by ones and by tens
  • Count forward from any number
  • Write numerals to 20

✅ 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: Counting & Cardinality📚 All Kindergarten skills🎮 Learning games⚡ Capy Live class quiz

🗓️ Plan the whole year like this

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

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More lessons in “Counting to 100 by ones and tens”

  1. Counting by tens
  2. Counting by ones to 100
  3. Counting on from any number
  4. Writing numbers 11–20
  5. Counting collections

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