Learning Aims:
  • To develop the concepts of particles moving, of particles in solution moving
  • To introduce diffusion and osmosis
  • To develop and apply mental models
  • To control variables
  • to be able to predict, observe and explain processes~
See worksheets 2.2a-2.2e
Suggestions for use:

The activities can be carried out in a learning cycles in small groups. The teacher can decide whether there should be a particular sequence to the activities or a free combination. Station 1 focuses on diffusion which can be explain by the Brownian motion. Station 2 focuses on the permeability of polymer membranes. Stations 3 and 4 extend the concept of particles and holes to different sizes of particles and explain it through molecular models. Station 5 develops visual models for the invisible structures and processes.

Possible questions:
See worksheets