To Use Pi or Pie

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To Use Pi or Pie?

• Created by
• Leslie Lause
• Owensville Middle School
• 7th grade Mathematics

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Pi Day songs
Jingle Bells

• Happy Pi Day
• Happy Pi day to you,Happy Pi day to you,Happy
  Pi day everybody,Happy Pi day to you.
• (to the tune of "Happy Birthday")

American PI
Lose yourself
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Cool values found in the never ending PI

• Phone number
• Birthday

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• http//www.projectmathematics.com/storypi.htm

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Objectives

• Ma-M-2-c-07
• The students will be able to apply geometric
  measurements and describe how to solve problems
  involving circumference and area of a circle.

Concept map
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Words to know

• Circumference (c)
• The distance around a circle or the perimeter of
  the circle

• Diameter (d)
• The distance across a circle through its center

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Words to know continued

• Center
• Given point from which all points on a circle are
  the same distance

• Radius
• the distance from the center to any point on the
  circle also is half of the diameter.

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Assessment

• Circle Discovery activity in class
• See page 297 in textbook
• Essay

Rubric
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Formulas

• Diameter 2 x radius
• D2r

• Circumference diameter x pi
• Cpd

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Finding area of Circles

• Area pi x radius²
• Ap r²
• See page 432

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Citations

• http//rubistar.4teachers.org/index.php?screenSho
  wRubricmoduleRubistarrubric_id1253114