Years 3 and 4 · Technologies · Knowledge and understanding

AC9TDI4K02

explore transmitting different types of data between digital systems

The content description above is Australian Curriculum, Assessment and Reporting Authority (ACARA)’s own wording, reproduced unmodified from the Australian Curriculum v9.0, read in August 2026, and licensed CC BY 4.0.

© Australian Curriculum, Assessment and Reporting Authority (ACARA) 2010 to present, unless otherwise indicated. This material was downloaded from the Australian Curriculum website and was not modified. ACARA does not endorse this product and is not affiliated with it.

Taught alongside it

The rest of Knowledge and understanding in Years 3 and 4.

The same idea, year by year

Where AC9TDI4K02 comes from and where it goes, for a student working below or above Years 3 and 4.

1. Years 1 and 2AC9TDI2K01identify and explore digital systems and their components for a purpose
2. Years 1 and 2AC9TDI2K02represent data as pictures, symbols, numbers and words
3. Years 5 and 6AC9TDI6K01investigate the main internal components of common digital systems and their function
4. Years 5 and 6AC9TDI6K02examine how digital systems form networks to transmit data
5. Years 5 and 6AC9TDI6K03explain how digital systems represent all data using numbers
6. Years 5 and 6AC9TDI6K04explore how data can be represented by off and on states (zeros and ones in binary)