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

Determination of enthalpy change in combustion reactions (2) Student activity Play

Determining the water content of a sample of soil Animation Play

Different types of insulation Slideshow Play

Direct electric current Whiteboard exercise Play

Direct electric current Student activity Play

Dissipation of heat Animation Play

Drawing circuits Student activity Play

Ecosystem Whiteboard presentation Play

Ecosystem Class activity Play

Ecosystem = biocenosis + biotope Student activity Play

Effects of the Sun on the Earth Whiteboard exercise Play

Efficiency of the Carnot cycle Student activity Play

Efficiency of the Carnot cycle Animation Play

Efficiency of the Carnot cycle Animation Play

Electric current performs work Student activity Play

Electric current performs work Whiteboard exercise Play

Electrical conductivity Student activity Play

Electrical conductivity Student activity Play

Electricity from nuclear energy Student activity Play

Electromagnetic waves of heat radiation Illustration Play

Elements of Period 3 of the periodic table Student activity Play

Endothermic and exothermic reactions Student activity Play

Endothermic and exothermic reactions Whiteboard exercise Play

Endotherms and ectotherms Student activity Play