Friday, September 07, 2007
Geometry (Class 4)
Overview
In today’s class we pick up where we left last time-- finding the areas of the shapes. We then continue our work building our understanding of the Pythagorean theorem and using our algebra skills to prove that it is always true. Finally we will see how the Pythagorean theorem can be used to find the distance between any two points on a coordinate plane when the coordinates for the points is known.
Textbook Sections
§1.3 (Txt. p. 17) Segments and Their Measures
Key Attitudes
Being helpful and productive
Key Ideas
Given a segment AC with point D between A and C, the sum of AD and DC is equal to AC.
Definitions of squares, rectangles, parallelograms, and right triangles.
The area of a shape can be found by cutting it into pieces, finding the area of each piece, and then adding all of the pieces together.
Explain the connection between the Pythagorean theorem and the Distance Formula
Key Skills
Finding areas of irregular polygons by dissection.
Determining if a square can be made on a dot grid.
Use the distance formula to find the distance between two points in the coordinate plane
Proving the Pythagorean theorem using a geometric model
Turn-In (#3)
Txt. p.14 #33-35, 40-43, 65-67
Txt. p.785 #1-28
Handouts
No Handouts Posted
Assignment
Txt. p.786 #1-24
Txt. p.16 #77-96
Txt. p.21 #19-30 odd
Chapter 1-Lesson 2 through #19
Disclaimer- The assignment as stated in class is the official assignment. Every effort is made to keep this posting accurate, but you should refer to what was stated in class as the final word.