Wednesday, February 28, 2007
Geometry (Class 53)
Announcements
Quiz Friday-- focuses on Chapter 8 Opener, Chapter 8 Lesson 1, Proof by Contradiction
Overview
In this class we apply what we have learned about similarity, ratios, and proportions in order to solve some applied problems.
Textbook Sections
§8.1 (Txt. p.457) Ratio and Proportion
§8.2 (Txt. p.465) Problem Solving in Geometry with Proportions
§8.4 (Txt. p.480) Similar Triangles
Key Attitudes
Mathematics is about justification.
Key Ideas
Similarity can be used to determine relationships between lengths in similar figures.
Key Skills
Using a scale factor to enlarge or reduce a triangle
Writing proportions when given two similar triangles
Calculating a scale factor when given two similar triangles
Measurement
Working with equivalent fractions
Handouts
Chapter 8: Lesson 3
Chapter 8: Lesson 4
Assignment
Finish Ch. 8 Lesson 3- Finish
Finish Ch. 8 Lesson 4 #1, 2
8.2 Challenge: Skills and Applications #10-13
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