The sum of the angles in the triangle Animation Play

The symmetry of isosceles triangles Animation Play

The symmetry of triangles Whiteboard exercise Play

The tangent Whiteboard presentation Play

The tangent Class activity Play

The tangent intersecting a curve Animation Play

The tangent theorem – solving problems Whiteboard exercise Play

The tangents to the circle that are parallel to the line Animation Play

The transversal and angles Student activity Play

The transversal and angles Whiteboard exercise Play

The vector equation of a line Animation Play

The vertex of a parabola Student activity Play

Torus Animation Play

Total current Animation Play

Total internal reflection Student activity Play

Total resistance Whiteboard exercise Play

Total resistance Student activity Play

Total resistance Simulation Play

Total resistance in a parallel circuit Whiteboard exercise Play

Total resistance in a parallel circuit Student activity Play

Transformations Class activity Play

Transformations Whiteboard presentation Play

Transforming the vector equation of a line Animation Play

Translation, rotation and reflection Whiteboard exercise Play

Transmitter aerials Slideshow Play