The word 'invalid' has existed for over 2000 years. It's meaning has changed and evolved. Recently the word describe wounded troops or disabled individuals, but also meant 'not valued' - this article considers the damage of a label and questions how the interpretations of invalid have linked to discriminate and segregate.
Active Learning: Why I turned my students into Sherlock Holmes for a lesson!
Leading on from my previous post about active learning; find out about how I turned a tutorial into a detective mystery.