Tuesday, September 11, 2007
Geometry (Class 5)
Overview
In today’s class we push on with our development of the Pythagorean theorem using our algebra skills to prove that it is always true. In addition 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. As time permits we will being to learn how to use a straight edge and compass to make geometric constructions. A great website for this can be found at http://www.mathopenref.com/tocs/constructionstoc.html
Textbook Sections
§1.3 (Txt. p. 17) Segments and Their Measures
Key Attitudes
Math is about investigating.
Key Ideas
How algebra and geometry can be used to prove the Pythagorean theorem.
How the Pythagorean theorem can be used to find the distance between two points in the coordinate plane.
Key Skills
Use the distance formula to find the distance between two points in the coordinate plane
Proving the Pythagorean theorem using algebra
Use the distance formula to find the distance between two points in the coordinate plane
Turn-In (#4)
Txt. p.786 #1-24
Txt. p.16 #77-96
Txt. p.21 #19-30 odd
Handouts
See Math Open Reference for handouts and interactive demonstrations.
Assignment
Chapter 1- Lesson 2: Complete all of the packet and the textbook problems listed at the end of the packet. (Some you will have already completed-- don’t do them again!)
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.