My friend Joan O’Hagan, who has died of cancer aged 75, was a gifted adult mathematics educator who never stopped asking questions about her practice and her students’ learning. She was an expert in the wry question that opened alternative lines of thought and adept at getting to the nub of an issue.
Over her career of more than 40 years, Joan inspired and enlightened many. While deeply serious and thoughtful, she approached her work with a lightness, creativity and humour that also characterised her relationships in the wider world.
