Start with the shape of solids, liquids and gases. Use physical models to explain observations, then distinguish the random movement of one speck from the spreading of a whole group of particles.

Includes 5 editable PowerPoint lessons. Each has a timed lesson plan, a suggested practical or modelling activity, a printable pupil sheet and teacher answers. The topic roadmap shows the sequence and equipment.

Lessons included

1. Solids, liquids and gases
2. Using particle theory
3. Brownian motion
4. Diffusion in liquids and gases
5. Air pressure and particle collisions

Bought separately the lessons total £5. The topic pack is £3.