Reflection: Joy Area vs. Circumference - Section 6: Closure and Ticket to Go


There is a local bakery, Petsi Pies , that celebrates Pi Day on March 14th every year.  They make hundreds of mini-pies in a variety of flavors.  Anyone who can recite the first 10 digits of pi from memory gets their choice of flavor.  My students were really excited about it and some students even memorized more than 10 digits in preparation for 3/14.

Not everyone is thrilled about Pi Day, and Vi Hart has created an amusing Anti-Pi Rant  that students may enjoy.


  Pi Day!
  Joy: Pi Day!
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Area vs. Circumference

Unit 8: Geometry
Lesson 6 of 19

Objective: SWBAT: • Identify and find the radius and diameter of a circle. • Estimate the area of a circle. • Find the area and circumference of a circle using a formula. • Determine whether to find circumference or area of a circle given a situation.

Big Idea: Make an estimate for the area of each circle. How can we calculate a more exact area? Students develop an estimate for a circle’s area and learn the formula. Then students must apply their knowledge to determine whether they calculate area or circumferen

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20 teachers like this lesson
Math, Geometry, circumference, 7th grade, 6th grade, master teacher project, area of a circle
  50 minutes
unit 7 5 image
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