Digital technologies / Year 7 and 8 / Digital Technologies Knowledge and Understanding

View on Australian Curriculum website Australian Curriculum, Assessment and Reporting Authority
Curriculum content descriptions

Investigate how digital systems represent text, image and audio data in binary (ACTDIK024)

Elaborations
  • explaining that characters in text correspond to numbers defined by the character set, for example ‘A’ corresponds to 65 in the ASCII and Unicode character sets
  • recognising that Unicode attempts to represent the written symbols of every language; and using Unicode charts to look up characters from Asian writing systems
  • investigating the different representation of bitmap and vector graphics and its consequences, for example pixelation in magnified bitmap and vector images
  • investigating how colours are represented in images and videos, for example manipulating red, green and blue (RGB) colours in an image editor
  • converting between decimal and 8-bit (1 byte) unsigned binary, covering whole numbers typically used for characters and RGB, for example 65 in decimal is 01000001 in 8-bit binary
  • explaining ways media elements are presented, for example the difference between embedded and linked media elements
General capabilities
  • Critical and creative thinking Critical and creative thinking
  • ICT capability Information and Communication Technology (ICT) capability
ScOT terms

Indices,  Data encoding,  Binary numeral system,  Computer files

Teacher resource

Data Representation

Find out about Data Representation. Use this topic from the Digital Technologies Hub to learn more, get ideas about how to teach about it, find out what other schools are doing and use the applications and games in the classroom.

Teacher resource

Binary

Find out about the binary number system, a base-2 number system. Use this topic from the Digital Technologies Hub to learn more, get ideas about how to teach about it, find out what other schools are doing and use the applications and games in the classroom.

Teacher resource

Computers and binary

This is a unit for Year 8 from the Scope and sequence resources from the DT Hub. The topic of data representation is organised into four key elements. Use this flow of activities to plan and assess students against the relevant achievement standards. Students examine the ways all computer data including text, images and ...

Teacher resource

Everything is numbers!

In this sequence students learn how the binary number system works, how we can represent text using binary numbers and learn one of the representations of the standard English alphabet used by computers. They look at how the same concepts apply to non-text data and analyse the effectiveness of some binary representation ...

Teacher resource

Digital Technologies Hub

The Digital Technologies Hub is a website that supports Australian primary teachers, secondary teachers, students, school leaders and school communities in engaging with the Australian Curriculum: Digital Technologies. The hub provides scaffolded support for teachers and many of the resources will assist those getting started ...