Joss Langford is a friend of mine, he is a great inventor and innovator, and a long term collaborator. He has just published a wonderful book for children called Emily's Numbers. The creation of the book become part of his treatment for throat cancer after being diagnosed in 2017. 30% of the publisher’s proceeds will be donated to a cancer treatment charity.
One of the reasons that Joss wrote the book is his belief that:
Maths is highly creative, but the full wonder of numbers can be difficult to convey in a formal syllabus. This simple and engaging narrative shows how, using just our imagination, we can discover endless possibilities in maths.