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This slideshow lesson is fully interactive and goes with the AREA OF A CIRCLE WS and is free so you can see my work! I have over 175 ppts available on http://www.mathslideshows.com/
The lesson starts by having students cut out a circle and label the circumference, diameter and radius. Next the students cut the circle on the diameter so that they have 2 semi circles. Next the students cut the radius of each semicircle but not to the outside edge. Then they fold the cut triangles to look similar to 4 teeth. They do this to both pieces. Then they fit both sets of teeth (or slices of pie) together to form a parallelogram. Next the students tape this figure to their AREA OF A CIRCLE WS (the free one.)
The slideshow lesson continues by having students label certain parts of their taped figure and answer questions to eventually discover the area of a circle is pie times radius squared.
THE ANIMATION ON THIS IS GREAT! I love this demonstration because it shows how something works so students understand the formula.
The lesson continues with several examples for students to try. The lesson ends with study guide notes for students to take at the end, which review all concepts taught in the lesson.
To see more information on the all of the math slideshows visit
http://www.mathslideshows.com/
The lesson starts by having students cut out a circle and label the circumference, diameter and radius. Next the students cut the circle on the diameter so that they have 2 semi circles. Next the students cut the radius of each semicircle but not to the outside edge. Then they fold the cut triangles to look similar to 4 teeth. They do this to both pieces. Then they fit both sets of teeth (or slices of pie) together to form a parallelogram. Next the students tape this figure to their AREA OF A CIRCLE WS (the free one.)
The slideshow lesson continues by having students label certain parts of their taped figure and answer questions to eventually discover the area of a circle is pie times radius squared.
THE ANIMATION ON THIS IS GREAT! I love this demonstration because it shows how something works so students understand the formula.
The lesson continues with several examples for students to try. The lesson ends with study guide notes for students to take at the end, which review all concepts taught in the lesson.
To see more information on the all of the math slideshows visit
http://www.mathslideshows.com/
K-12 Subject:
Grade Level(s):
Teaching Duration:
50 Minutes
Type of Resource:
Answer Key:
N/A
# of Pages/Slides:
21
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FILE DETAILS
Presentation (Powerpoint) File
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693 KB | 21 Pages
FEEDBACK
janmccance
Great job with this resource! Thanks for sharing!
April 4, 2013 
Teachers Unleashed (TpT Seller)
This is a very clear and thorough piece. Thank you so much!
August 23, 2011
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havefunlearning (TpT Seller)
Just an fyi that I'm afraid I couldn't see the words on your preview very well. Is it a PowerPoint? Usually people will use a few pages of the PowerPoint in the sample. Thank you!
April 6, 2013
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TEACHING EXPERIENCE
I taught junior high school Math for the last 13 years. This includes teaching 6th grade Math, 7th grade Pre-Algebra, 8th grade Algebra, 8th grade Basic Math, and Algebra Readiness intervention classes. I can tell you that developing interactive slideshow Math lessons on each topic taught in Math has been a huge motivator for student participation, student involvement & interaction. With the birth of my 3rd son I recently transferred to my boy's school. I am now a first year KINDERGARTEN teacher and loving every minute of it! I teach my very own son who is in my class, and I get to volunteer in my first grade son's class every week! YIPPEEE!!!
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