circles-lesson-4-area-of-circles-and-sectors

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Interactive video lesson plan for: Circles Lesson 4 " Area of Circles and Sectors

Activity overview:

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http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
Note taking Guide link
http://www.moomoomath.com/High-school-geometry-help.html
This is a long video so please take advantage of the video guide.
Video Guide
00:13 Definition of a sector
00:35 Formula for area of a circle
00:40 Sample problem- finding the area of a circle when given the radius
01:26 Sample problem - finding the area of a circle when given the diameter
02:21 Formula for area of a sector reviewed and explained
03:48 Sample problem - find the area of a sector
04:50 Sample problem - find the area of a sector
06:29 Sample problem- find the area of a circle given the sector area
09:20 Sample problem - find the radius of a circle given a central angle and the sector area
12:56 Question 1 . At the pizza party, the goalie Dan ate an ENTIRE PIZZA! If the radius of the pizza he ate was 6 inches. How big was the slice of pizza he ate? Provide each answer in exact form and approximate form.
14:40 Question 2 Charlie ate half a pizza that had a diameter of 20 inches! How big was the pizza he ate?
15:44 Application problem using area of a circle
16:59 Question 4 Tommy ate one slice of pizza from the pizza at right that has a diameter of 4in.
What was the size of his slice of pizza?

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Tagged under: circles,area circle,geometry,area sectors,math ,Geometry (Field Of Study),geometry ,geometry lessons,sectors,Area (Dimension),moomoomath

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