Home Plan - [GR2-L7-U1-LC1-26 Pi Day]

The document provides guidance for teaching about pi and pie, emphasizing the importance of strategies like summarizing and understanding key concepts such as the constant ratio of the circumference of a circle to its diameter, known as pi (approximately 3.14). It delves into the historical discovery of pi by Archimedes and its modern applications in mathematics, technology, and everyday life, including Chao Lu’s record for memorizing 67,890 digits of pi. The significance of Pi Day on March 14, the celebration involving pi-themed foods and activities, and an algorithm for calculating pi using a soup can and string are also highlighted as engaging ways to explore this fascinating mathematical concept.

Contents

• Pages 1—22: Teaching about pi
• Pages 23—40: Pi concept and applications.
• Pages 41—59: Pi Day celebrations
• Pages 60—62: Calculating pi creatively.

This section of the document is focused on providing tips and guidelines for teaching about pi and pie. It includes learning objectives, words to know, and a focus question related to summarizing a nonfiction text. The document introduces the strategy of summarizing, identifying the main idea and details, and provides definitions for words such as circumference, decimal point, diameter, digits, pi, and calculate. There are instructions on how to engage students in discussions about pi and pie, as well as how to use context clues to understand unfamiliar words. The section emphasizes the importance of reading strategies like summarizing and provides guidance on answering questions related to who, what, when, where, why, and how in order to comprehend and retain information from a text.

The section discusses the concept of pi, a special number discovered by Archimedes more than two thousand years ago. Pi is the ratio of the circumference of a circle to its diameter and is constant, approximately 3.14. William Jones was the first to use the symbol π for this number. Pi has infinite decimal digits, with computers calculating it to trillions of digits. Pi’s applications include calculating circle measurements, volumes of shapes, air travel fuel needs, planetary research, and creating random numbers in computers. The world record for memorizing pi is held by Chao Lu, who recited 67,890 digits from memory, showcasing the fascination and diverse applications of pi in mathematics and beyond.

Computers use pi to generate numbers that seem random to users since truly random numbers cannot be created by computers. A Chinese man named Chao Lu holds the record for memorizingpi, reciting it to 67,890 places in 2006. Pi Day is celebrated on March 14 because the first three digits of pi are 3.14, and in 2009 the US Congress made it a national day. People celebrate Pi Day by eating pi-themed foods like pizzas and pies, and some go further by participating in pi-themed activities like running a pi marathon. Larry Shaw arranged the first Pi Day celebration in 1988 at the San Francisco Exploratorium, and it has since become an event celebrated worldwide. Additionally, some people decorate their rooms or wear pi-themed items to mark the day.

The section of the document provides an algorithm to calculate pi using a soup can, string, and marker. The steps include wrapping the string around the can to mark its diameter, measuring the diameter at three marks, and determining pi from the excess string length. Additionally, there is mention of a character Goat S being introduced to a story involving Chicken Boy and a math minute related to calculating pi. The section also discusses that the content is aimed at early finishers for additional activities.