Reflection: Modeling Area of a Circle - Section 1: Lesson Notes + Examples


I went through the examples with a class but found that several students still seemed lost.  I decided the students needed a list to follow.  This will help the majority of students to be independent.

The list is below.

Finding the Area of a Circle

1) Identify the radius

2) Substitute the radius, r, into the formula Area = PI * r^2

3) Solve the equation

I posted this on the board as students worked.  If they had a question, I first made sure they had taken care of the 3 steps on the board.

  How do I find the area of a circle again?
  Modeling: How do I find the area of a circle again?
Loading resource...

Area of a Circle

Unit 6: Geometry
Lesson 8 of 37

Objective: SWBAT solve problems involving the area of a circle using the circle area formula

Big Idea: Students learn to use the area of a circle formula by first seeing how the formula is similar to the area of a rectangle.

  Print Lesson
11 teachers like this lesson
Math, areas, circumference (Determining Measurements), Geometry, 7th Grade Math, Area of Circl, circles, perimeter, Diameter, pi
  50 minutes
Similar Lessons
Density of Gases
8th Grade Science » Heat Transfer and Interactions of Matter
Big Idea: This investigation uses a simple method that allows for capturing the gas released from a chemical reaction to help students determine the density of the released gas.
Brookline, MA
Environment: Urban
Ryan Keser
Exploring Circumference
6th Grade Math » Geometry
Big Idea: What is pi, anyway? Students explore the relationship between circumference and diameter by measuring a variety of circles and use it to derive the formula for circumference.
Somerville, MA
Environment: Urban
Andrea Palmer
Relationship Between Circumference and Diameter - What is pi?
7th Grade Math » Geometric Measurement
Big Idea: Did you say pie? or pi? Bring in a circular item for class, and it if happens to be food - AWESOME!
Elon, NC
Environment: Suburban
Heather Stephan
Something went wrong. See details for more info
Nothing to upload