Numbers Have Families!

Chapter 6: Number Bonds (Part–Part–Whole)

Did you know? Every number is made of other numbers! 5 is not just "five" — it's 2 and 3, it's 4 and 1, it's even 0 and 5! Let's discover how numbers can split and join!

Split Numbers
Find Parts
Make Wholes
Collect Bonds
👧🏽

Riya's Gift Sharing!

Riya has 5 gifts for her birthday party.
She wants to share them between two friends.

How many ways can she split them?

5 can be split many ways!

5 is made of 0 and 5, or 1 and 4, or 2 and 3...

Parts Make a Whole

The Number Bond

Every number can be split into two parts. Together, the parts make the whole!

5
2
3

5 is made of 2 and 3

5
4
1
5
0
5

Same whole, different parts!

Remember: The whole is always on top. The parts are always below. The whole NEVER disappears!

You Split!

Drag objects into two groups

Whole: 5
Part 1
0
Part 2
0

Discover All Bonds

Collect every way to make a number!

Choose a number:

Found: 0/0

Questions & Answers

Understanding number bonds

Practice Zone

Find the missing parts!

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Final Quiz

10 questions!

1/10

Real World Hunt

Split things at home!

🍪
Split 4 Biscuits
Share 4 biscuits into two groups. How many ways can you do it?
1
2
3
Share 5 Pencils
Put 5 pencils into two piles. Find all the different splits!
1
2
3
🧸
Group 3 Toys
Make 3 using two groups of toys. How many ways?
1
2
3
Parent & Teacher Corner
▼
CBSEClass 1 • Math Magic
Gap Identified
Number bonds are used implicitly in addition/subtraction but never explicitly taught. Children are expected to "know" combinations without building understanding.
Why This Matters
✓Bonds make subtraction intuitive (if 5=2+3, then 5-2=3)
✓Mental math becomes natural, not memorized
✓Foundation for algebra readiness
CambridgeStage 1 • Number
Explicit Coverage
Part-part-whole model explicitly taught. Number bonds to 10. Represent and explain relationships.
✓Use number bonds to 10
✓Explain relationships verbally
ICSEClass 1-2 • Numbers
Current Approach
Simple number splits, mostly worksheet-based with weak visual grounding.
✓Encourage physical rearranging
✓Multiple representations help
⚠️ Language Discipline (Critical!)
✅ SAY:
"5 is made of 2 and 3"
"What parts make 6?"
"Can you split this differently?"
❌ AVOID (for now):
"2 plus 3 equals 5" (symbols come later)
Drilling or timed practice
Worksheet-only approaches
Home Activity
Use snacks, toys, or crayons. Ask "How many ways can you share 5 grapes between two plates?" Let the child discover — don't drill!
← Ch 8 All Chapters Ch 10 →

Endless Practice

Keep practicing! New problems every time. No limit!

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