Equation of a circle Class activity Play

Equation of a circle Whiteboard presentation Play

Equation of a circle in the coordinate system Animation Play

Equation of any circle Simulation Play

Events causing changes in the concentration of oxygen in the Earth's atmosphere Whiteboard exercise Play

Evolution of the Earth's atmosphere Animation Play

Exercises about the equation of the circle with centre at an arbitrary point Student activity Play

Finding points of intersection algebraically Animation Play

Finding the area Whiteboard exercise Play

Finding the centre of a circle Student activity Play

Finding the centre of a circle Simulation Play

Finding the centre, the radius and the equation of a circle Student activity Play

Finding the equation of the tangent Whiteboard exercise Play

Finding the length of the stretched band Whiteboard exercise Play

Finding the locus Whiteboard exercise Play

Finding the radius and the centre of a circle Whiteboard exercise Play

Finding the radius of a circle Whiteboard exercise Play

Finding the surface area of a ring Student activity Play

Finding the volume of a frustum of a cone Whiteboard exercise Play

Focal length and the shape of a lens Student activity Play

Focal length and the shape of a lens Simulation Play

Forces in curvilinear motions Whiteboard presentation Play

Forces in curvilinear motions Class activity Play

Fresnel lens Animation Play

Frustum of a cone Student activity Play