Foundation Maths Numbers to 20 Activities and Worksheets (AC9MFN01)

Australian Curriculum Version 9.0 – Foundation Year Mathematics

What is AC9MFN01?

AC9MFN01: Recognise, represent and order numbers to at least 20 and connect numbers with quantities and familiar situations.

In Foundation Year, children learn to:

• Count collections accurately.
• Read and write numbers from 0 to 20.
• Match numerals with quantities.
• Order numbers from smallest to largest.
• Identify one more and one less.
• Recognise numbers in everyday situations.

Developing strong number sense in the early years creates the foundation for future learning in addition, subtraction, place value and problem-solving.

Why Learning Numbers to 20 is Important

• Build confidence with counting.
• Develop early addition and subtraction skills.
• Understand place value concepts in later years.
• Solve real-world mathematical problems.
• Develop reasoning and mathematical thinking.

1. Count and Collect

Ask children to collect:

• 5 pencils
• 10 blocks
• 15 leaves
• 20 counters

Children count each collection and record the matching numeral.

Skills Developed: Counting, one-to-one correspondence and quantity recognition.

2. Number Hunt

Hide number cards from 0 to 20 around the room.

When children find a card, ask them to:

1. Say the number.
2. Write the number.
3. Show that many counters or objects.

Skills Developed: Number recognition and numeral formation.

3. Build the Number

Provide linking cubes, blocks or counters.

Ask children to build:

• 7
• 13
• 18
• 20

Skills Developed: Connecting numerals to quantities.

4. Number Line Jump

Create a number line from 0 to 20.

• Jump to 8.
• Jump to 12.
• Find the number after 16.
• Find the number before 10.

Skills Developed: Ordering and sequencing numbers.

5. Numbers Around Us

Encourage children to find numbers in everyday life:

• House numbers
• Calendars
• Price tags
• Clocks
• Sports jerseys
• Number plates

Skills Developed: Understanding that numbers have real-life purposes.

Questions to Ask Children

• Which number is larger, 12 or 15?
• What number comes before 9?
• What number comes after 17?
• Can you show 14 using counters?
• Can you place these numbers in order from smallest to largest?

Common Mistakes Children Make

Counting the Same Object Twice

Encourage children to move or touch each object as they count.

Skipping Numbers

Practise counting forwards and backwards using a number line.

Confusing Numerals

Children sometimes reverse or mix up numerals such as 12 and 21. Provide regular opportunities to read, write and represent numbers.

At-Home Practice Ideas

• Count toys before packing them away.
• Count steps while walking.
• Find numbers during shopping trips.
• Read house numbers.
• Play board games with numbered spaces.
• Look for numbers in books and magazines.

Even five minutes of daily practice can significantly improve children's number confidence.

Free Numbers to 20 Resources

Our free Foundation Maths resources include:

• Teacher slides
• Student practice worksheets
• Revision activities
• Black-and-white printable pages
• Australian Curriculum aligned activities

Download Resources

Recommended Learning Resources

The following resources may help children further develop number sense and counting skills:

• Numbers to 20 Activity Book
• Counting Bears and Counters
• Number Flash Cards
• Ten Frames and Number Mats
• Early Learning Maths Games

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Skillr Education Books

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Australian Curriculum Alignment

Learning Area: Mathematics

Year Level: Foundation

Curriculum Code: AC9MFN01

Students recognise, represent and order numbers to at least 20 and connect numbers with quantities and familiar situations.

Explore More Foundation Maths Topics

• Subitising to 5 (AC9MFN02)
• Quantifying and Comparing Collections to 20 (AC9MFN03)
• Patterns and Sorting
• Early Addition and Subtraction
• Measurement and Data

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