This study examines alternative method of teaching and learning of the concept of diffusion. An improvised U-shape glass tube called ionic mobility tube was used to observed and measure the rate of
movement of divalent metal ions in an aqueous medium in the absence of an electric current. The study revealed that the movement of ions can be effectively measured using ionic mobility tube, and this can be used to effectively teach the concept of diffusion. This study also showed that difficult and abstract concepts in chemistry can be effectively taught using improved instructional materials/apparatus. The study recommended the use of ionic mobility tube for the teaching and
learning of the concept of diffusion in senior secondary chemistry curriculum