Davisson-Germer experiment Simulation Play

DDT – a persisting insecticide Slideshow Play

Deamination of amino acids Illustration Play

Death Slideshow Play

Death rate (mortality) and survival rate (survivorship) Student activity Play

Death rate and survival rate in different animal populations Whiteboard exercise Play

Death rate and survival rate in the mute swan Animation Play

Decarboxylation Animation Play

Decay law Class activity Play

Decay law Whiteboard presentation Play

Decay of uranium Animation Play

Deceleration Animation Play

Decomposing a rational expression into partial fractions Whiteboard exercise Play

Decomposing an expression with a polynomial in the denominator Whiteboard exercise Play

Decomposing by factorising the denominator Animation Play

Decomposing rational expressions Whiteboard exercise Play

Decomposing rational expressions into partial fractions Student activity Play

Decomposition of a radioactive substance Animation Play

Decomposition of a rational expression Whiteboard exercise Play

Decomposition of a rational expression with an arbitrary denominator Animation Play

Decomposition of a simple rational expression Animation Play

Decomposition of ammonia on a metal surface Animation Play

Decomposition of calcium carbonate Animation Play

Decomposition of CFC in the atmosphere Slideshow Play

Decomposition of function Whiteboard exercise Play

Decomposition of hydrogen iodide Animation Play

Decomposition of hydrogen peroxide Animation Play

Decomposition of hydrogen peroxide Animation Play

Decomposition of plastic litter Slideshow Play

Decomposition of rational expressions Student activity Play