Dividing 450 euro into three parts Whiteboard exercise Play

Dividing a line segment Student activity Play

Dividing into a given ratio Student activity Play

Dividing quantities in a given ratio Whiteboard exercise Play

Dividing quantities in a given ratio Student activity Play

Dividing segments in a given ratio Whiteboard exercise Play

Dividing segments in a given ratio Student activity Play

Division into three parts in a given ratio Student activity Play

Division into three parts in a given ratio Animation Play

Division into two parts in a given ratio Student activity Play

Division of a segment Animation Play

Does a compound have a constant composition? Student activity Play

During a thunderstorm Student activity Play

During a thunderstorm Whiteboard exercise Play

Early atomic theories Whiteboard exercise Play

Early atomic theories Class activity Play

Early atomic theories Whiteboard presentation Play

Early atomic theories Whiteboard exercise Play

Early atomic theories Student activity Play

Early attempts to classify chemical elements Whiteboard exercise Play

Early attempts to classify chemical elements (1) Student activity Play

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

Eka-aluminium and eka-silicon Whiteboard exercise Play

Eka-aluminium and eka-silicon Chart Play

Electron configuration Animation Play