References & curriculum sources

The official sources behind Place Value Peaks, the exact Year 4 content descriptions it supports, and how the site handles copyright.

Australian Curriculum v9 — Year 4 Number

Place Value Peaks supports four content descriptions from the Australian Curriculum: Mathematics Version 9.0, Year 4, Number strand. Each one is quoted word for word from the official Year 4 Mathematics page (checked 21 October 2026):

AC9M4N01: ‘recognise and extend the application of place value to tenths and hundredths and use the conventions of decimal notation to name and represent decimals’. On this site: Hundredths Grid, the place-value reader on the Learn page, Summit Quiz questions 1, 4, 6 and 10.
AC9M4N05: ‘solve problems involving multiplying or dividing natural numbers by multiples and powers of 10 without a calculator, using the multiplicative relationship between the place value of digits’. On this site: Digit Slide, Summit Quiz questions 5 and 8.
AC9M4N02: ‘explain and use the properties of odd and even numbers’. On this site: Odd or Even?, Summit Quiz questions 2 and 7.
AC9M4N06: ‘develop efficient strategies and use appropriate digital tools for solving problems involving addition and subtraction, and multiplication and division where there is no remainder’. On this site: Strategy Trail (including the on-screen calculator case), Summit Quiz questions 3 and 9.

Attribution: © Australian Curriculum, Assessment and Reporting Authority (ACARA) 2010 to present, unless otherwise indicated. This material was downloaded from the Australian Curriculum website (accessed 21 October 2026) and was not modified. The material is licensed under CC BY 4.0. ACARA does not endorse any product that uses ACARA material or make any representations as to the quality of such products. Place Value Peaks is not affiliated with, sponsored by, or endorsed by ACARA.

Official sources to explore

ACARA — Australian Curriculum: Mathematics Version 9.0, Year 4: the official Year 4 Mathematics page with every content description and its elaborations.
australiancurriculum.edu.au — Mathematics, Year 4
ACARA — Copyright and terms of use: the licence (CC BY 4.0) and attribution wording used on this site.
australiancurriculum.edu.au/copyright-and-terms-of-use
The Mathematics Hub — Year 4 Number planning tool: the Australian Government's free planning tool for teachers, delivered by Education Services Australia, with the Year 4 Number topics and teaching sequences.
mathematicshub.edu.au/planning-tool/4/number

About our text, games and pictures

All lessons, explanations, worked examples, game questions and activities on this site were written for Place Value Peaks and the Maths Explorers Club Unit 8 book from standard mathematical knowledge. Nothing was copied from the pages listed above or from any other publisher. Facts such as "0.9 is greater than 0.15" or "odd + odd = even" are general mathematical knowledge.

All game code was written for this site. The illustrations were generated for this site with the Qwen Image 2.1 model, and the 3D block pictures were modelled and rendered in Blender for this site; the hundredths-grid picture was corrected by hand so it shows exactly 0.37. No stock images, logos or third-party characters are used.

Independent publication notice: Place Value Peaks — The Number Climb and the Maths Explorers Club series are independent publications and are not affiliated with, sponsored by, or endorsed by ACARA or Education Services Australia. Organisation names are used descriptively with plain text links only. No logos are used.