Sir Cumference and the Dragon of Pi

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This week is maths week and our book focus was Sir Cumference and the Dragon of Pi. Through this book, we have learnt about the properties of circles and the relationships between these. In the story, the character has to investigate and measure the circumference and diameter of a range of circles to discover the answer to the puzzle that will save his father, Sir Cumference. We carried out the investigation, just like the main character, to see if we could discover it too. Through our measuring, we discovered that the circumference of every circle was about ‘3 and a bit’ times larger than the diameter. We then learnt that this number was Pi – a constant number that represents the ratio between the diameter and circumference of every circle. It has an infinite number of decimal places; some of us have been trying to see how many digits we can remember!

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