This topic has 2 replies, 1 voice, and was last updated 10 years, 10 months ago by Gary Williams. Author Posts 15 December 2010 at 13:14 #15358 Giving different voltages colours can help to visualise whatÃ¢â‚¬â„¢s happening and to solve problems that often prove tricky. Details are in the copies of the Physics Education article Phys. Educ. 38 No 3 (May 2003) 191-193 . 16 December 2010 at 15:15 #15359 This reading describes a model for teaching potential difference: http://www.nuffieldfoundation.org/practical-physics/hill-diagram-model-potential-difference [Edited: updated Practical Physics web address. Jon Clarke] 16 December 2010 at 15:20 #15360 You will need: Colouring pencils or ICT: Livewire is a piece of software that will colour voltages automatically. Get it from http://www.new-wave-concepts.com/ – free trial download from their site. Author Posts You must be logged in to reply to this topic.