My new book “Yes, but why? Teaching for understanding in mathematics” is now available for preorder from most retailers.

The book is designed to explain why things work in mathematics, such as formulae, algorithms and general patterns and rules.

You can read a preview of 20 pages here

Answers in a PowerPoint to the recent ‘what fraction is shaded’ black and white series.

So I ventured into the world of YouTube. Here is my first video

Hope you enjoy it ðŸ™‚