Definition of pressure Whiteboard exercise Play

Definition of the definite integral Animation Play

Demonstration of the formula for the area of a triangle Whiteboard exercise Play

Demonstration or proof? Animation Play

Demonstration or proof? Student activity Play

Derivatives of the trigonometric functions in geometry Animation Play

Deriving the formula for the surface area of a sphere Animation Play

Determination of enthalpy change in combustion reactions (1) Student activity Play

Determination of equilibrium constant Whiteboard exercise Play

Determination of molecular structure Student activity Play

Determination of the equilibrium constant Student activity Play

Determining the concentration of a solution using redox titration Whiteboard exercise Play

Determining the concentration of a solution using redox titration (1) Student activity Play

Determining the concentration of a solution using redox titration (2) Student activity Play

Determining the concentration of a solution using titration Student activity Play

Determining the content of oxalic acid in rhubarb Animation Play

Determining the empirical formula Student activity Play

Determining the empirical formula Whiteboard exercise Play

Determining the mass of solute present in a titrated sample Student activity Play

Determining the mass of solute present in a titrated sample Whiteboard exercise Play

Determining the molecular formula Whiteboard exercise Play

Determining the molecular formula Student activity Play

Determining the number of bacteria in a sample Animation Play

Determining the water content of a sample of soil Animation Play

Difference of squares Student activity Play