Algebraic notation

Writing products and quotients without symbols, so 3 × y is 3y.

Squares and cubes of a letter

What a², a³ and 2a each mean, and why a² and 2a are not the same thing.

Terms, factors and coefficients

Naming terms, factors and coefficients in an expression.

Expression, equation or formula

Deciding which a piece of algebra is from its equals sign and its letters.

Writing an expression from words

Turning descriptions of ages, costs or lengths into expressions.