Different types of energy Animation Play

Diffraction Chart Play

Diffraction Student activity Play

Diffraction of electrons – the Davisson-Germer experiment Student activity Play

Dioxins Student activity Play

Discharging a battery. Accumulators. Student activity Play

Discharging a battery. Accumulators. Whiteboard exercise Play

Discovery of elementary particles Whiteboard exercise Play

Discovery of elementary particles Student activity Play

Dissolving ionic compounds in water Student activity Play

Division of electromagnetic waves Chart Play

Division of electromagnetic waves Chart Play

Division of electromagnetic waves Chart Play

Division of UV radiation Illustration Play

Do catalysts affect the reaction equilibrium? Animation Play

Do households affect ecosystems? Student activity Play

Dosimeters Slideshow Play

Drawing circuits Student activity Play

Drugs and health Whiteboard presentation Play

Earth's atmosphere Animation Play

Ecological succession Whiteboard presentation Play

Ecological succession Class activity Play

Economics of the extraction of metals Whiteboard exercise Play

Economics of the extraction of metals Student activity Play

Ecosystem Class activity Play