Determining the empirical formula Student activity Play

Discrete variables Slideshow Play

Dissolution Animation Play

Distance – a more difficult problem Whiteboard exercise Play

Distance – a more difficult problem Student activity Play

Dividing natural numbers Student activity Play

Divisibility by 11 Student activity Play

Division algorithm Student activity Play

Dot plot Animation Play

Dot plot Student activity Play

Drawing a graph of absolute value of the given function Whiteboard exercise Play

Early attempts to classify chemical elements (2) Student activity Play

Effectiveness Whiteboard exercise Play

Eka-aluminium and eka-silicon Whiteboard exercise Play

Elimination the extreme values Animation Play

Energy value of fuel Animation Play

Energy value of some fuels Illustration Play

Energy-level diagram for the hydrogen atom Animation Play

Enthalpy Student activity 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

Entropy Student activity Play

Entropy and spontaneous changes Student activity Play