HolcombMath

Tuesday, September 02, 2008

Geometry (Class 2)

Lesson Title
Points, Lines, and Planes

Overview
In the warm-up today students need to use a ruler to accurately measure the lengths of distances on a map, and then use these measurements along with some clues to figure out a puzzle.
During the lesson today students are introduced to some of the fundamental concepts and skills related to points, lines, and planes including how to measure the distance from a point to a line as well as the measures of the interior and exterior angles of a triangle.
Textbook Sections
§1.2 (Txt. p.10) Points, Lines, and Planes

Vocabulary
point
line
plane
undefined terms
line
line segment
ray
opposite ray
collinear
coplanar
distance
perpendicular
right angle

Key Attitudes
Math is about thinking creatively.

Key Ideas
The shortest distance from a line to a point not on the line is equal to the length of the perpendicular segment from the point to the line.
Not sets of three line segments will make a triangle.
The sum of the interior angles of a triangle is 180˚.
Key Skills
I can determine the distance between a point and a line.
I can create a triangle using three line segments.
I can recognize and use basic geometry terminology.
I can sketch and uses sketches which represent a plane and the basic geometric objects related to the plane.
Turn-In (#1)
Get materials.
Letter signed by parent
“Practice A” and “Assessment” #2-32 even

Handouts
Chapter 1- Lesson 1: Points, Lines, and Planes

Assignment
Txt. p.786 #2-24 Even
Txt. p.787 #2-30 Even

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.