Discontinuous variation Student activity Play

Dispersion forces in halogens Animation Play

Dissociation of bases Student activity Play

Dissolving ionic compounds in water Student activity Play

Distance on the map Animation Play

Dividing a line segment Simulation Play

Dividing a line segment Student activity Play

Dividing into a given ratio Student activity Play

Drawing a parallelogram Whiteboard exercise Play

Drawing a parallelogram and calculating its area Whiteboard exercise Play

Drawing a plan Whiteboard exercise Play

Drawing a plan Student activity Play

Drawing opposite vectors Whiteboard exercise Play

Drawing segments Simulation Play

Effects of day length on the flowering of plants Simulation Play

Electrolytic dissociation (2) Student activity Play

Electromagnetic spectrum Animation Play

Electronegativity Animation Play

Electronegativity and polarity Class activity Play

Electronegativity and polarity Whiteboard presentation Play

Electronegativity and the nature of bonds Illustration Play

Electronegativity and the nature of bonds Illustration Play

Electronegativity and the nature of bonds (1) Student activity Play

Electronegativity and the nature of bonds (2) Student activity Play

Electronegativity and type of bond Animation Play