Acknowledgements
Exuberant thanks are due to our partners for their patience and encouragement during the writing process; and to those of our children who were about while the work was in progress.
In the construction of many of the graphs in this book, we used Autograph: dynamic software for teaching coordinate geometry and statistics. We are grateful for the permission granted by Douglas Butler of Autograph-Maths, through Eastmond Publishing Ltd PO Box 46, Oundle, Peterborough PE8 4JX, UK.
Image credits - these are under Creativecommons licence 2.0
Inspiration, cropped from an image by Thomas Leuthard
One way sign, image by Ryan McGuire
In the construction of many of the graphs in this book, we used Autograph: dynamic software for teaching coordinate geometry and statistics. We are grateful for the permission granted by Douglas Butler of Autograph-Maths, through Eastmond Publishing Ltd PO Box 46, Oundle, Peterborough PE8 4JX, UK.
Image credits - these are under Creativecommons licence 2.0
Inspiration, cropped from an image by Thomas Leuthard
One way sign, image by Ryan McGuire
