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AlgebraHigher

The nth term of a quadratic sequence

A difference pyramid finds the second difference; halve it for the n squared part. A table then takes that part away from the sequence to show what is left.

A free GCSE Higher algebra lesson on the nth term of a quadratic sequence, spec code A25. It has a lesson deck to teach from with a visualiser, a worksheet with answers, an exit ticket and an end of unit test.

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