A half-plane as a graphical solution of an inequality Whiteboard exercise Play

A half-plane as a graphical solution of an inequality Student activity Play

A path around a park pond Animation Play

A rectangular fence Animation Play

An application of half-planes in economy Animation Play

An example of an exponential inequality Animation Play

An inequality in a coordinate system Animation Play

Body mass index Animation Play

Body mass index – activity Whiteboard exercise Play

Buying a ticket Student activity Play

Buying a ticket Whiteboard exercise Play

Changing the subject of the formula Student activity Play

Changing the subject of the formula – more complex examples Student activity Play

Combined quadratic inequalities Student activity Play

Combined quadratic inequalities Whiteboard exercise Play

Common part of the half planes Whiteboard exercise Play

Composing and solving linear equations Class activity Play

Composing and solving linear equations Whiteboard presentation Play

Congruent figures – solving problems Student activity Play

Congruent triangles – solving problems Student activity Play

Coordinates of midpoints of line segments Whiteboard presentation Play

Coordinates of midpoints of line segments Class activity Play

Defining half-planes Whiteboard exercise Play

Defining half-planes – a simple case Student activity Play

Defining inequalities in a coordinate system Student activity Play