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Exploring Pi: Understanding Circular Objects and Their Relationship to Odometers

This activity focuses on manipulating circular objects while observing their properties, specifically how the perimeter and diameter relate to the mathematical constant Pi (approximately 3.1416). By engaging with circular objects, learners can visualize the connection between all circles, enhancing their understanding of basic geometric principles. While it's not essential to present the formula P=2πR, it is beneficial to demonstrate this fundamental relationship using practical examples. Explore the fascinating world of circular objects and their applications in measuring distance!

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Exploring Pi: Understanding Circular Objects and Their Relationship to Odometers

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  1. Odometer Task

  2. MANIPULATING CIRCULAR OBJECTS

  3. OBSERVING THE RESULTS What do we notice? By establishing the perimeter/diameter ratio, we approximately obtain the number Pi (3,1416). It is not necessary to show the formula P=2R, but useful to make others understand that there is a mathematical relationship between all circles.

  4. OBJECTS THAT MAY BE OBSERVED http://www.lemagasinsp.com/media/z/a/cpizza.jpg http://www.lacantiniere.com/images/produits/100/20027_aa_roulette_patissier.jpg http://www.homedepot.ca/wcsstore/HomeDepotCanada/images/catalog/057517187663_4.jpg http://www.fages-aiglon.fr/catalog/images/couteau-circulaire.jpg http://www.nouveauxobjets.com/odometre.jpg

  5. Principle of the map odometer

  6. Division of the wheel

  7. 4 types of possible solutions

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