Direct evidence for the structure of the inside of the Earth Slideshow Play

Direct proportion Whiteboard presentation Play

Direct proportion Whiteboard exercise Play

Direct proportion Class activity Play

Direct proportionality Whiteboard exercise Play

Direct proportionality models Whiteboard exercise Play

Direct proportionality models Student activity Play

Dissolution Animation Play

Dissolving ionic compounds in water Whiteboard exercise Play

Dissolving ionic compounds in water Student activity Play

Electrolytic dissociation (2) Student activity Play

ELISA – an immuno-enzymatic technique Student activity Play

Enthalpies of hydration for selected ions Whiteboard exercise Play

Enthalpy Whiteboard exercise Play

Enthalpy of hydration Whiteboard exercise Play

Enthalpy of hydration Student activity Play

Enthalpy of solution. Part 1 Student activity Play

Examples of DC supplies Slideshow Play

Factors affecting enthalpy of hydration Animation Play

Graphs of direct proportionality Animation Play

Graphs of direct proportions Student activity Play

Hydration Animation Play

Hydration of ethene Animation Play

Hydration of metal ions Animation Play

Introduction to direct proportion Student activity Play