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D.3 Counting backward 20-0

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Learning to Count Backward

Counting backward helps children understand that numbers can go down as well as up. Knowing what number comes before builds the foundation for subtraction and number sense.

Example:
  • Count backward: 5, 4, 3 → The number before 5 is 4.
  • Count backward: 10, 9 → The number before 10 is 9.
Note

Encourage children to say each number out loud as they move backward. This strengthens memory and confidence with reverse counting.

Understanding Number Order in Reverse

Numbers follow a sequence that can go forward or backward. When counting in reverse, each number is one less than the one before it.

Try This:
  • Sequence: 7, 6, 5 → The number before 7 is 6.
  • Sequence: 15, 14 → The number before 15 is 14.
Note

Show children how to look for the number that comes right before. Using fingers or number cards can make the sequence easier to see.

Using Objects to Count Down

Hands-on activities make reverse counting fun. Taking away objects one by one shows how numbers go down and reveals the number that comes before.

Example:
  • Start with 5 blocks → Remove 1 block → Say “Now we have 4 blocks.”
  • Line up 10 coins → Take 1 coin away → Say “Now there are 9 coins.”
Note

Let children touch and move the objects as they count backward. This builds a strong connection between physical actions and number order.

Connecting Reverse Counting to the Number Line

A number line shows how numbers go down when moving to the left. Each step left shows the number that comes before.

Try This:
  • Start at 8 → Move one step to the left → Land on 7.
  • Start at 12 → Move one step to the left → Land on 11.
Note

Use a simple number line from 0 to 20. Highlight the move to the left to show which number comes before.

Tips for Teachers and Parents

  • Start with small numbers, then practice going down from 20.
  • Ask questions like “What comes before 9?” to check understanding.
  • Use claps, steps, or pointing to make backward counting active and fun.
  • Celebrate each correct answer to build confidence.
Supportive Practices:
  • Play a game where children step back for each number they say.
  • Use visual aids like number cards in a row to see which number is before.
  • Repeat short reverse sequences daily to strengthen memory.
Note

Short, frequent practice sessions help children remember reverse counting better than long sessions. Consistency makes the pattern clear.

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