Year 3 Mathematics – Term 1 (WA Curriculum): Place Value and More

What this unit covers

In Term 1, Year 3 Mathematics in the WA Curriculum centres on the unit “Place Value and More”.

Term 1 Mathematics for Year 3. Focus areas: place value, counting. Aligned with WA Curriculum v9.

Lesson sequence (40 lessons)

The unit breaks down into the following lesson-by-lesson sequence — each title below is a teachable lesson, in order:

1. Reading and Writing Numbers to 100 Using Place Value
2. Ordering Two-Digit Numbers on a Number Line
3. Partitioning Two-Digit Numbers into Tens and Ones
4. Representing Numbers to 100 with Concrete Materials
5. Skip Counting by 2s, 5s and 10s to 100
6. Reading and Writing Three-Digit Numbers
7. Partitioning Three-Digit Numbers into Hundreds, Tens and Ones
8. Ordering Three-Digit Numbers Using Place Value Strategies
9. Exploring the 0-999 Number Sequence Pattern
10. Reading and Writing Four-Digit Numbers
11. Representing Four-Digit Numbers with Base-Ten Materials
12. Recalling Addition Facts to 10 Automatically
13. Recalling Subtraction Facts to 10 Automatically
14. Using Part-Part-Whole Models for Addition to 20
15. Using Part-Part-Whole Models for Subtraction to 20
16. Demonstrating Addition and Subtraction as Inverse Operations
17. Recalling All Addition and Subtraction Facts to 20
18. Creating Increasing Additive Patterns with Concrete Materials
19. Describing Rules for Increasing Number Patterns
20. Creating Decreasing Additive Patterns from Any Starting Point
21. Representing Multiplication as Equal Groups Using Arrays
22. Exploring Division as Sharing Equally Using Concrete Materials
23. Connecting Multiplication and Division as Inverse Operations
24. Learning Multiplication Facts for 2 Times Table
25. Learning Multiplication Facts for 5 Times Table
26. Learning Related Division Facts for 2 and 5 Times Tables
27. Solving Real-World Addition Problems Using Part-Part-Whole Models
28. Solving Real-World Subtraction Problems Using Part-Part-Whole Models
29. Estimating and Measuring Length Using Centimetres
30. Comparing and Ordering Objects by Length in Metres
31. Measuring Length Using Millimetres for Small Objects
32. Comparing Areas Using Informal Units Without Gaps
33. Ordering Shapes by Area Using Square Units
34. Solving Length and Area Problems in Real Contexts
35. Using Chance Language to Describe Daily Events
36. Identifying Possible Outcomes in Simple Chance Events
37. Collecting Data Through Classroom Surveys
38. Organising Survey Data Using Tally Marks
39. Creating Picture Graphs from Collected Data
40. Reading and Interpreting Picture Graphs with Symbols

Curriculum codes in this unit

Content codes:

Reading the codes: WA codes (the ones starting with WA) pack the year level, learning area, strand and content number into one string, while the national Australian Curriculum v9 uses a different anatomy that starts with AC9 — same content family, different labels. Our complete WA Curriculum guide decodes both, character by character.

Planning notes for Term 1

WA terms run roughly 9–11 weeks, and in 2026 Term 1 runs from Monday 2 February to Thursday 2 April — 9 weeks for WA public schools. With 40 lessons in this unit, that leaves breathing room for assessment, moderation and the weeks that disappear to carnivals, camps and public holidays — plan the assessable work to land two to three weeks before the end of term rather than in the final week.