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Middle School: 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 middle schools in the United States.

Middle School Problems of the Week in which pi plays an important part are listed below. For background information, explore the Middle School Pi area of the Ask Dr. Math archives, 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 middle-school sites, go to the bottom of the page, set the searcher for middle school (6-8), and press the Search button.

Access to these problems requires a Membership.

Accuracy Please - Judy Ann Brown
active problem Pre-Algebra, difficulty level 3. Considering precision, accuracy, and appropriateness in finding the volume of a cone. ... more>>

Building a Snow Statue - Judy Ann Brown
active problem Pre-Algebra, difficulty level 3. Determine the height of a snow statue using the given information. ... more>>

Partial Area - Judy Ann Brown
active problem Pre-Algebra, difficulty level 3. Find the area of the portion of the circle that is not included inside the inscribed square. ... more>>

Peanut's Back Yard - Jonathan Bauer
active problem Pre-Algebra, difficulty level 3. Peanut, the overexcited dog, makes 40 laps around a stake and travels a total distance of 1 mile. If his bowl of water is 20 feet away from the stake, can he get a drink? ... more>>

Pi Day - Let's Eat Cake! - Judy Ann Brown
active problem Pre-Algebra, difficulty level 3. In honor of Pi Day we will be comparing the volumes of slices taken from round and rectangular cakes. ... more>>

Pi Day Treats - Judy Ann Brown
active problem Pre-Algebra, difficulty level 3. Help Mrs. Granville and Mrs. Germain plan a Pi Day celebration. ... more>>

Pizza Pie - Judy Ann Brown
active problem Pre-Algebra, difficulty level 3. Use the given information to decide how many slices of the small pizza would be equal to or greater than 3 slices from the large pizza. ... more>>

Shine On Harvest Moon - Judy Ann Brown
active problem Pre-Algebra, difficulty level 2. Find the area of the largest circle that can be cut from a nine-inch by twelve-inch sheet of paper. ... more>>

Valley Springs Snow Cream - Kelly Crisp
active problem Pre-Algebra, difficulty level 3. Compare the volume of a sphere, cone, and cylinder using ice cream. ... more>>

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