The tangent – reducing angles Student activity Play

The tangent – reducing angles Whiteboard exercise Play

The transversal and angles Whiteboard exercise Play

The transversal and angles Student activity Play

The trigonometric functions of the angle 90° Animation Play

The two sides and an angle between them Whiteboard exercise Play

The values of the trigonometric functions Animation Play

The work that needs to be done to pull a barrel up Whiteboard exercise Play

Theorem – assumptions and claim Whiteboard exercise Play

Theorem – assumptions and claim Student activity Play

Theorems and their assumptions in geometry Student activity Play

Time of flight for projectile motion at an angle Whiteboard exercise Play

Time of flight for projectile motion at an angle Student activity Play

Total internal reflection Student activity Play

Total internal reflection Simulation Play

Transform a triangle into a rectangle Student activity Play

Transform a triangle into a rectangle Simulation Play

Transformation of a triangle Animation Play

Transformations Student activity Play

Triangle Animation Play

Triangles Whiteboard presentation Play

Triangles Class activity Play

Triangles in LOGO Student activity Play

Triangles – part I Student activity Play

Trigonal bipyramidal and octahedral geometry Animation Play