Algebra tiles support the representation and manipulation of constant, linear
and quadratic expressions. Expressions are built up from tiles corresponding to each of
x^{2}, −x^{2},
x, −x, 1,
and −1, where the shape and colour indicates
the class of tile.

The activities below help practice building up expressions using Algebra Tiles, using zero pairs — i.e. a pair of opposite tiles that cancel each other out, and like terms — i.e. terms in an algebraic expression that can be combined (with tiles this is represented by the tiles having the same size and shape and basic colour).