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Book Suggestions and Activities

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of 6 different objects.Measure to the nearest ½ centimeter.Record the object number, circumference, and diameter in the chart below.Then, write the ratio of the circumference to the diameter in the form of a fraction.Next, use a calculator to change the fraction into decimal form, rounding to the nearest thousandth.After doing this for all 6 objects, find the

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What is Pi

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What is Pi? Who first used Pi? How do you find it? What is it for? How many digits is it?

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Pi Necklaces

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The Math Forum - National Council of Teachers of Mathematics

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Pi Day Activities for 5-8

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Do you know of activities to use for a Pi Day , March 14 (3.14) celebration?

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What is Pi and More

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Every year on March 14, math lovers around the country celebrate pi. Some enthusiasts even go so far as to mark Pi Minute at 1:59, which takes into account the first six digits of the pi: 3.14159. Pi Day provides the perfect excuse for incorporating math and geometry into all aspects of the school day.

What Is Pi?

Pi is the circumference of a circle (the distance around the circle) divided by its diameter (the distance across). In other words, the circumference of any circle is approximately 3.14 times its diameter. Because pi is an irrational number, it has an infinite number of digits. No matter how many decimal places we calculate, pi will always be an approximation.

Because pi is the same for every circle, we can use it to determine the diameter if we know the circumference, or vice versa. And when we know the diameter, it's easy to calculate the area.

This gif (animated sequence) that "unrolls" pi will give your students a quick visual of how a circle's diameter, circumference, and pi are related.

The History of Pi

From ancient China to Babylonia, mathematicians have been puzzling over pi for thousands of years. A Brief History of Pi explains the history of this fascinating number.

Since pi goes on forever, even the most powerful supercomputers will never know all of pi's digits. But that doesn't stop people from trying! In 2002, a team of mathematicians at the University of Tokyo broke the record, using computers to calculate pi to 1,241,100,000,000 decimal places. Check out this amazing display of the first million digits of pi.

Fun With Pi

Pi gives ample opportunity for creative math fun. This amazing activity, for example, allows your students to play pi as a musical sequence! Simply pick ten notes, which are then assigned to integers, and then listen to what pi sounds like!

Your students can search pi for number combinations (birthdays, jersey numbers, lucky numbers) using the Pi Search Results Tool. It also allows you to view any section of pi in groups of 10 to 1000 digits.

Try Cutting Pi, a hands-on activity in which students measure cylindrical objects in the classroom with string, cut their measured string into three equal pieces, and then figure out how to measure the leftover piece. They'll see for themselves how pi comes up every time!

Learn how to make a circle from three points on a plane and have fun manipulating nested circles with this interactive tool that shows students that circles are awesome.

For Younger Students

Introduce ideas such as size, shape, and circumference, among others, with Fun With Balls and Hoops, a physical development activity from Early Childhood Today.

Or take your kids into the kitchen to explore circumference, diameter, and fractions by making pizza pies with this activity plan from Early Childhood Today.

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Every year on March 14, math lovers around the country celebrate pi. Some enthusiasts even go so far as to mark Pi Minute at 1:59, which takes into account the first six digits of the pi: 3.14159. Pi Day provides the perfect excuse for incorporating math and geometry into all aspects of the school day.

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Here are some Pi Day Activity suggestions submitted by teachers, students & every day people.
More Pi Day Ideas: Things to do for Pi Day (2011) | How to Celebrate Pi Day (2010)

For our Pi Day, my school asked all the faculty members if they would be interested in being "pi'd" and their name was put on a plastic jug. students would place money in their jug throughout the week and the teacher/faculty member with the most money got pi'd at an all school assembly. but then the idea came about that if we raised a total of $350 (we are a small school) then all the faculty that signed up, would get pied.
it was a great turn out, and we raised a total of about $400!we donated all the proceeds to multiple charities.
By student Mar 23, 2008 at 7:06 pm

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Here are some Pi Day Activity suggestions submitted by teachers, students & every day people. More Pi Day Ideas: Things to do for Pi Day (2011) | How to Celebrate Pi Day (2010) For our Pi Day, my school asked all the faculty members if they would be interested in being "pi'd" and their name was put on a plastic jug.