Proof - sum of consecutive integers
Last updated: 15/11/2023
Contributor: David Main
A Powerpoint for GCSE, showing proof of the statement:
The sum of three consecutive integers is divisible by three.
The activity takes a class through visual representation to algebraic proof of the statement. Students may benefit from having manipulatives available.
A great starting point for proof at KS4, or upper KS3.
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