Error Checking - Checksums, Modulus, ARQs-GCSE Computer Science- Full Lesson

This is a full lesson on Error Checking with all resources / activities. I use this for a double lesson of around 1 hour and 50 minutes and it provides a thorough understanding of Checksum, ARQs, Echo Checks, and Modulus. There are lots of extension activities linking to Python and Spreadsheets with full examples. For the lesson on parity, please click here

The Learning Objectives are:

• Know why error checking is important in a computer system
• Know ways of error checking using algorithms
• Checksums
• ARQs
• Echo Checks
• Modulus
• Understand how error checking can have real world application beyond just simple data transmission

Resources included:

• Full lesson presentation
• Demonstration handout for ARQs
• Python extension for checksums with coded example
• Spreadsheet ISBN extension with example

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