2-D Shapes (Chapters 1 & 2)
Lesson 10: Circles (1.1)
Learning Goals of Lesson 10
By the end of this lesson, I can:
-tell the difference between diameter and radius of a circle
-find diameter given radius or find radius given diameter
-find the circumference (perimeter) of a circle
-find the area of a circle
-solve problems of circles, semi-circles and quarter-circles
Video 1: What is Pi?
Video 2: Where Does Pi Come From?
Video 3: What You Need to Know About Circles
Video 4: Formula for the Area of a Circle
Video 5: Circumference of a Circle
Use π = 3.14 only when instructed in a question; otherwise use the π key.
Video 6: Find the Area of a Circle Given Radius
Use π = 3.14 only when instructed in a question; otherwise use the π key.
Video 7: Find the Area of a Circle Given Diameter
Video 8: Find Diameter & Radius Given the Circumference
Use π = 3.14 only when instructed in a question; otherwise use the π key.
The video does the division manually. You can use your calculator to do it!
Use π = 3.14 only when instructed in a question; otherwise use the π key.
The video does the division manually. You can use your calculator to do it!
Video 9: Find the Radius of a Circle Given the Area
Use π = 3.14 only when instructed in a question; otherwise use the π key.
The video does the division manually. You can use your calculator to do it!
Video 10: Find the Area of a Semi-Circle
Video 11: Find the Area of a Quarter Circle
Handout 1-21:
Handout 1-22: |
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Smartboard Class Notes
Prior Grade 9 Review:
How to Evaluate Powers and Square Roots