Foundation Mathematics · AC9MFN01

Numbers to 20

Name, show and put numbers from 0 to 20 in order

Ready to project and teach

Learning goalsStart here
Learning intention

I can build, see, say, write and order numbers from 0 to 20.

BuildCountSayWriteOrderExplain
Success looks like
  • The student can collect a requested quantity, such as 9 paintbrushes.
  • The student can match the collection to the numeral.
  • The student can tell what comes before, after and between numbers.
Australian CurriculumExact wording and teacher focus
Australian Curriculum content description

Name, represent and order numbers

Name, represent and order numbers including zero to at least 20, using physical and virtual materials and numerals.

Teacher focus
  • Students connect a real collection, a spoken number name and a written numeral.
  • Zero means none and belongs before 1 in the count sequence.
  • Order matters: before, after, between, one less and one more.
I doModel the skill
9 - one space is empty
14 - 1 ten and 4 ones
20 - 2 full tens

Teacher talk: Count each counter once. The last number you say tells how many. A teen number can be shown as one full ten and extra ones.

Worked examplesWe do

Clean one-page examples

AC9MFN01 - Numbers to 20
Example 1

Collect a requested quantity or match a numeral to a quantity; for example, collecting 9 paintbrushes after hearing "nine".

Example 2

Recognise number order to 20 and identify one less and one more using card games, songs, storybooks and rhymes.

Example 3

Use ordinal and positional language such as first, second, before, after and between.

Example 4

Recognise, write and read numerals on familiar objects, images, texts and labels.

More examplesBuild understanding
  1. Collect a requested quantity or match a numeral to a quantity; for example, collecting 9 paintbrushes after hearing "nine".
  2. Recognise number order to 20 and identify one less and one more using card games, songs, storybooks and rhymes.
  3. Use ordinal and positional language such as first, second, before, after and between.
  4. Recognise, write and read numerals on familiar objects, images, texts and labels.
  5. Connect quantities to number names and numerals through stories, counting games and familiar contexts.

Display rule: one curriculum idea per line, one example per line, then one short teacher prompt.

Check understandingQuestions and answers

Question 1

How many counters are shown if the last number said is 14?

Answer

There are 14 counters. The last count tells the total.

Question 2

What number comes before 15? What number comes after 15?

Answer

14 comes before 15. 16 comes after 15.

Question 3

Why is zero still a number?

Answer

Zero means none. It is used when a collection has no objects.

Exit ticketReview and assess
Review hints
  • If the student guesses, go back to build-count-say-write.
  • If the student reverses before and after, mark the starting end first.
  • If teen numbers are weak, rebuild them as 10 and some more.
Exit ticket

Show 17 in two ways.

Then say the number before 17 and the number after 17.

Curriculum alignmentVictoria · NSW · International

Mapped skill: name, represent and order numbers including zero to at least 20, using physical and virtual materials and numerals

RegionCurriculum frameworkClosest level or code
AustraliaAustralian Curriculum v9.0AC9MFN01 · Foundation
VictoriaVictorian Curriculum F–10 Version 2.0 — MathematicsVC2MFN01 · Foundation
New South WalesNSW Mathematics K–10 Syllabus (2022)MAE-RWN-01 + MAE-RWN-02 · Early Stage 1
United States (USA)Common Core State Standards for MathematicsKindergarten
Canada (Ontario)Ontario Curriculum — MathematicsKindergarten
United Kingdom (England)National Curriculum in England — MathematicsYear 1, Key Stage 1
IndiaNCERT / CBSE — MathematicsFoundational Stage / Balvatika 3

Australian Curriculum v9.0 is the canonical source for this SkillrHub lesson. Victoria and NSW entries name the closest published state codes or outcomes; international entries are planning references rather than claims of identical curricula.

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