ACTDIK015: Examine how whole numbers are used to represent all data in digital systems.
This is a classroom learning activity for data representation of binary data that is aimed at upper primary but can be adapted easily to suit lower grades if appropriate – particularly if using the unplugged versions only.
Lesson starts unplugged and then moves to picture for students to further examine binary representation on computers.
- Organise students into small groups of three or four. Provide groups with a range of black and white squares: Black and white cards and a 5 x 5 design mat for them to lay tiles on the Design mat.
- Invite groups to fill up their board with the black and white squares to make a pattern.
- Ask students how they would get another group of students to create exactly the same pattern without allowing them to see the image? Note ideas on a whiteboard.
- Pair up groups and have them trial strategies for recreating patterns.
- As a whole class, discuss the strategies that worked the best.
Another version is students map out a mystery picture or pattern using binary code where the computer would process ‘1’ for coloured in, or ‘0’ for not..
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