AC9TDI10K03
Year 9
Technologies
AC9TDI10K03 – Year 9 Technologies: Data representation
Strand
Knowledge and understanding
Substrand
Data representation
This Content Descriptor from Year 9 Technologies provides the specific knowledge and skills students should learn. Use it to plan lessons, create learning sequences, and design assessments that align with the Australian Curriculum v9.
Content Description
investigate simple data compression techniques
Elaborations
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1
using an algorithm to identify patterns in data and represent them in a compressed way, for example repeated pixels in an image with run-length encoding
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2
exploring the difference between lossy and lossless compression and the consequences of each, for example exploring codecs for audiovisual compression such as MP3, MP4 and WAV formats, considering energy requirements of file sizes
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3
examining an image and discussing whether the image quality would be compromised if all the blue pixels of the sky in one row were to be replaced by one token and the number of pixels it represents
Related Achievement Standards