Energy transformations in an electrical circuit Simulation Play

Energy transformations in an electrical circuit Whiteboard exercise Play

Energy transformations in an electrical circuit Student activity Play

Engelmann's experiment - light and photosyntheis Animation Play

Environmental effects of fuel combustion Student activity Play

Environmental factors and their effects on seed germination Animation Play

Environmental factors necessary for germination Student activity Play

Enzymes Student activity Play

Examples of energy transfer Whiteboard exercise Play

Examples of energy transfer Student activity Play

Examples of luminous objects Slideshow Play

Examples of wasted energy Student activity Play

Eye’s optics Slideshow Play

Factors affecting photosynthesis Whiteboard exercise Play

Factors affecting photosynthesis Class activity Play

Factors affecting photosynthesis Student activity Play

Factors affecting photosynthesis Student activity Play

Factors affecting the absorption of light Animation Play

Features of receptors Slideshow Play

Fermat's Principle Simulation Play

Fermat's Principle Whiteboard exercise Play

Fermat's Principle Student activity Play

Fermat's Principle Simulation Play

Fermat's principle Student activity Play

Fermat's Principle and the law of reflection of light Animation Play