Loughborough University Mathematics Education Network (LUMEM) offers free access to online CPD videos for maths teachers. I’ve recently produced another video for their collection. It’s from my Topics in Depth series, and it’s all about angles in polygons.
You can access it here.
Like all my Topics in Depth CPD, this workshop aims to enhance teachers’ subject knowledge as well as providing teaching ideas and inspiration. You could watch the video directly before you teach the topic, to help you plan really good lessons.
If your whole department is going to be teaching angles in polygons, you could watch it together and discuss it in a department meeting.
You can download the slides here.