A line parallel to a given line Student activity Play

A rhombus, a parallelogram and a trapezium in coordinates Whiteboard exercise Play

A symmetrical triangle on squared paper Student activity Play

Advanced problems Student activity Play

An inscribed angle Student activity Play

An interesting formula to find the area of a polygon Student activity Play

Angle between an edge and a face Animation Play

Are two angles equal? Student activity Play

Area of a polygon Animation Play

Axis of symmetry and the factor form of a quadratic function Student activity Play

Building 3-D objects with cubes Student activity Play

Building 3-D objects with cubes Whiteboard exercise Play

Changing the factor form of the function into the vertex form Whiteboard exercise Play

Changing the general form of the function into the vertex form Whiteboard exercise Play

Changing the vertex form of the function into the factor form Whiteboard exercise Play

Comparing angles Animation Play

Congruent triangles Student activity Play

Congruent triangles Animation Play

Construction of a parallelogram Simulation Play

Construction of a square Simulation Play

Coordinates – introduction Student activity Play

Coordinates – the city hall Whiteboard exercise Play

Creating symmetrical triangles Whiteboard exercise Play

Cubes – parallel edges and perpendicular edges, nets Student activity Play

Definition of an inscribed angle Animation Play