Math Forum - Problems Library - Elementary, Pi

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Elementary: Pi

Pi [], 3.14159... - the ratio of the circumference of a circle to its diameter - has puzzled mathematicians for almost 4,000 years. We have never found an exact value for pi, which has infinitely many numbers to the right of the decimal point. Pi Day is often celebrated on March 14 in elementary schools in the United States.

Elementary Problems of the Week in which pi plays an important part are listed below. For background information, read The Joy of Pi by David Blatner, or visit the Dr. Math FAQ about Pi.

To find relevant sites on the Web, browse and search Pi in our Internet Mathematics Library; to find elementary sites, go to the bottom of the page, set the searcher for late elementary level (3-5), and press the Search button.


Access to these problems requires a Membership.

Circles Around - Lisa Lavelle
Math Fundamentals, difficulty level 3. Use this exploration problem to discover the relation between circumference and diameter. ... more>>

Lucky Lettuce Land - Kainoa Trotter, et al.
Math Fundamentals, difficulty level 3. Help Farmer Lucky fence his lettuce land. ... more>>

Sprinkler Spray - Lisa Lavelle
Math Fundamentals, difficulty level 4. Compare the radii of three sprinklers in Lily's garden. ... more>>

Stained Glass Window - Jackson First Year Algebra Class
Elementary, difficulty level 5. Find the size of a stained glass window for my front door. ... more>>

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