The time needed to reach the mountain top Whiteboard exercise Play

The transversal and angles Student activity Play

The transversal and angles Whiteboard exercise Play

The winning times Animation Play

Time series Student activity Play

Time series Whiteboard exercise Play

Triangle and its area Simulation Play

Triangle and its area Simulation Play

Triangle and its area Simulation Play

Triangle and its area – activity Student activity Play

Triangles in LOGO Student activity Play

Triangles symmetrical with respect to a line Whiteboard exercise Play

Triangles – part II Student activity Play

Trigonometric functions of quadrantal angles Whiteboard exercise Play

Trigonometric functions of quadrantal angles Student activity Play

Trigonometric functions of the sum and difference of angles (1) Class activity Play

Trigonometric functions of the sum and difference of angles (1) Whiteboard presentation Play

Trigonometric functions of the sum and difference of angles (2) Class activity Play

Trigonometric functions of the sum and difference of angles (2) Whiteboard presentation Play

Trigonometric ratios – the angles of the triangle Whiteboard exercise Play

Two isosceles triangles Whiteboard exercise Play

Two points Whiteboard exercise Play

Two points Student activity Play

Two right-angled triangles Whiteboard exercise Play

Types of angles Animation Play