circles-lesson-lesson-7-proportions-and-review

# Interactive video lesson plan for: Circles Lesson Lesson 7 " Proportions and Review"

#### Activity overview:

Geometry Teachers Never Spend Time Trying to Find Materials for Your Lessons Again!

http://geometrycoach.com/Geometry-Lesson-Plans/?pa=MOOMOOMATH
http://www.moomoomath.com/High-School-Geometry-Circles-Unit7-and8.html

This is a long video so please take advantage of the video guide
0:33 Define linear measurement ( radius and diameter)
0:57 Area measure explained
1:03 Volume explained
1:54 How to convert the linear relationship to an area relationship and a volume relationship
These are several examples of converting from linear to area to volume and keeping the correct ratios
2:56 Example 2
4:11 Example 3
4:59 Example 4
6:20 Example 5
7:00 Application problems on surface area and volume A balloon has a radius of 6in. Describe what happens to the balloon's surface area if the balloon inflates and the radius changes to 12in.
9:08 2. Describe what happens to the same balloon's volume if the radius is doubled
10:02 3. A sphere has a radius of 4 in. What happens to the sphere's volume if the radius is halved?
11:25 4. A sphere has a radius of 8in. What happens to the sphere's surface area if the radius is halved?
12:25 Fills in radius,surface area and volume chart

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Tagged under: Proportions,Volume (Dimension),math ,Geometry (Field Of Study),ratios geometery,Area (Dimension),radius,linear measurements,Lesson,sphere,geometry ,math tutorial,moomoomath,geometry lessons

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