Mutual position of lines and interior angles in a triangle Class activity Play

Mutual position of lines and interior angles in a triangle Whiteboard presentation Play

Newton's First Law for rotational motion Animation Play

Newton's First Law for rotational motion Student activity Play

Newton's Second Law for rotational motion Student activity Play

Newton's Second Law for rotational motion Simulation Play

Newton's Second Law for rotational motion Whiteboard exercise Play

Not all reactions involve collisions Student activity Play

Number of revolutions Whiteboard exercise Play

Observations Student activity Play

Obtuse angles Whiteboard exercise Play

Obtuse angles Student activity Play

On what does wave refraction depend? Student activity Play

On what does wave refraction depend? Whiteboard exercise Play

Opposite angles of a parallelogram Animation Play

Optical activity Student activity Play

Optical activity Whiteboard exercise Play

Optical instruments Whiteboard presentation Play

Optical instruments Whiteboard presentation Play

Optical instruments Class activity Play

Optical instruments Class activity Play

Order of rotation symmetry Whiteboard exercise Play

Parallax method Animation Play

Parallel lines and corresponding angles Student activity Play

Parallelograms and rectangles Student activity Play