Coterminal angles in the quadrants of the coordinate system Whiteboard exercise Play

Cross-multiplication Student activity Play

Current, the charge supplied and the time of passage of current Animation Play

Cyclic changes in the female reproductive system Illustration Play

Decimals in the coordinate system Whiteboard exercise Play

Decomposition of ammonia on a metal surface Animation Play

Decomposition of hydrogen peroxide Animation Play

Defence mechanisms of the immune system against parasites Animation Play

Defining inequalities in a coordinate system Student activity Play

Defining inequalities in a coordinate system Simulation Play

Defining inequality in a coordinate system Simulation Play

Definition of pressure Glossary Play

Definition of pressure Student activity Play

Deriving Cartesian equations of a locus Whiteboard exercise Play

Deriving Cartesian equations of a locus Student activity Play

Deriving function from equations Animation Play

Deriving function from equations Whiteboard exercise Play

Deriving the expression for equilibrium constant for ammonia synthesis reaction Animation Play

Determination of rate equations Whiteboard exercise Play

Determination of rate equations Student activity Play

Determination of reaction rate by measuring the volume or pressure of the gas evolved Student activity Play

Determining the quadrant of the coordinate system Whiteboard exercise Play

Determining the signs of trigonometric functions Student activity Play

Determining the units of equilibrium constant Whiteboard exercise Play

Development of the nervous system Slideshow Play