External and internal fertilization Slideshow Play

External fertilization Animation Play

External fertilization in newts and salamanders Animation Play

External gills Slideshow Play

External muscle structure Animation Play

External photoelectric effect Class activity Play

External photoelectric effect Whiteboard presentation Play

External structure of a root Simulation Play

External structure of the heart Slideshow Play

Fertilization and development Student activity Play

Fertilization and development Whiteboard exercise Play

Finding points of intersection algebraically Animation Play

Finding the area Whiteboard exercise Play

Finding the centre of a circle Simulation Play

Finding the centre of a circle Student activity 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 Simulation Play

Focal length and the shape of a lens Student activity Play