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Sir Cumference and The Dragon of Pi

Sir Cumference and the Dragon of Pi is by the very talented Cindy Neuschwander and is a brilliant combination of literacy and numeracy. First printed more than 10 years ago in 1999 it is just as relevant and relatable now as it was then. 

This book is part of a series of books about Sir Cumference his wife Lady Di of Ameter and their young son Radius. In this story Sir Cumference is accidentally turned into a dragon and Radius must try to find the correct potion to turn him back again as quickly as possible. The problem is that the doctor is away and the potion dose is measured using a riddle about circles, their radius and their circumference. Radius must solve the riddle to find the correct dose to save his father.

By working with his cousin Lady Fingers and Geo of Metry the Carpenter and Wheelright Radius discovers that the radius of a circle fits 3 and a bit times around the circumference of a circle.  He just has to work out exactly what that extra “bit” is. By completing the tasks for this book your students can have fun learning this lesson for themselves and seeing why Pi is a decimal and what the closest fraction equivalent is.

Activities for this book include drawing a dragon, finding the rule for the circumference of a circle, finding the circumference of circles, solving maths questions to solve a dragon related riddle, measuring circles to see what fraction of the diameter is required to create the diameter, drawing circles given the diameter, answering pi related questions and labelling parts of a circle to solve a riddle. 

By watching the video for this book you will also find some idea for physically active games you can play with your students that tie into the themes of the book and an offer to win $50 by providing your feedback in the comments section below.


Free Teaching Resources

Circles

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Draw Circles

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Premium Teaching Resources

Draw A Dragon

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Circumference

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Parts of A Circle

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