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AlgebraCommon

Equation or identity?

A substitution table: work out both sides for x = 1, 2 and 3. Equal every time is an identity, equal once is an equation. Then expanding and collecting to show two expressions are identical.

A free GCSE Foundation and Higher algebra lesson on equation or identity, spec code A6. It has a lesson deck to teach from with a visualiser, a worksheet with answers, a puzzle, an exit ticket, end of unit tests and a method video.

Four Fours: expression, equation, formula or identity, first page
Puzzle

Four Fours:Expression, equation, formula or identity

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