Crossing lines cut by two parallel lines Animation Play

Crystalline solids Animation Play

Cubes – parallel edges and perpendicular edges, nets Student activity Play

Cubes – parallel faces and nets Student activity Play

Cubes – perpendicular faces and nets Student activity Play

Cuboids – parallel edges and perpendicular edges Student activity Play

Cuboids – parallel faces and nets Student activity Play

Cuboids – perpendicular faces and nets Student activity Play

Density of solids Whiteboard exercise Play

Density of solids Illustration Play

Density of solids Student activity Play

Diffusion and pressure Student activity Play

Diffusion in different physical states Whiteboard exercise Play

Diffusion in different physical states Student activity Play

Dissolution of solids in water Student activity Play

Dissolution of solids in water Whiteboard exercise Play

Examples of transparent materials Slideshow Play

Exceptional properties of some giant molecular solids Whiteboard exercise Play

Exceptional properties of some giant molecular solids Student activity Play

Extremely low and extremely high melting points Slideshow Play

Finding the length of the diagonal of lateral face Whiteboard exercise Play

Finding the surface areas of solids Whiteboard exercise Play

Finding volumes of solids Student activity Play

Functions 'similar' to trigonometric functions Animation Play

Gases, liquids and solids Class activity Play