Current is a nice simple word; it means the rate of flow of charge. So you need to explain rate … More
Month: February 2017
Electricity’s Colourful Past
Yesterday I wrote about electric charge and its confusing meanings (here). I had intended to write about voltage and current … More
Electric Charge – why it is difficult to understand and how to help.
My heart has never been in definitions. It was set against them in Africa 20 years ago, when I was … More
Using Comparative Judgement to Rank the Importance of Concepts
If you haven’t heard of comparative judgement (CJ), it is the latest fashionable way for judging the quality of student … More