Survey
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
* Your assessment is very important for improving the workof artificial intelligence, which forms the content of this project
1 Lesson Plan #001 Class: Geometry Date: Friday September 7th, 2012 Topic: Points, lines, and planes Aim: What are points, lines and planes? Objectives: 1) Students will be able to describe what is a point, a line, and a plane HW# 1: Answer the questions on the attached sheet on page 4. Do Now: Test your skills on the following problems: 1) x 9 9 x is an example of which property? A) associative property of addition C) commutative property of addition B) additive identity D) additive inverse 2) 2( x 3) 2 x 6 is an example of which property? A) associative property of multiplication C) commutative property of multiplication B) distributive property D) multiplicative inverse property 3) x ( y 3) ( x 3) y is an example of which property? A) associative property of addition B) distributive property C) additive identity D) commutative property of addition 4) (5 y ) (1) 5 y is an example of which property? A) multiplicative identity property C) commutative property of multiplication B) multiplicative inverse property D) associative property of multiplication 5) ( xy) z x( yz ) is an example of which property? A) commutative property of multiplication C) distributive property B) associative property of multiplication D) multiplicative inverse property 6) ( x 5)(7 x) ( x 5) 7 ( x 5) x is an example of which property? A) associative property of addition B) commutative property of multiplication C) associative property of multiplication D) distributive property 7) ( y 2) ( y 2) 0 is an example of which property? A) multiplicative identity property B) additive identity property C) multiplicative inverse property D) additive inverse property 1 1 is an example of which property? 2x 8) 2 x A) multiplicative identity property C) commutative property of multiplication B) multiplicative inverse property D) associative property of multiplication 9) Determine which equation illustrates the commutative property. A) a 0 a B) a (b c) (a b) c C) ab ba PROCEDURE: Write the Aim and Do Now Get students working! Take attendance Go over the Do Now D) a (b c) ab ac 2 A point represents a location, often denoted with a dot, although it has no length, width or thickness. Usually represented with a capital letter, for example point P or P A line is an infinite set of points that extend endlessly in opposite directions. The line has no thickness. Its length is infinite. A line is named by listing two points that are on the line. For example, consider the line shown with the indicated points. How can this line be named? A B C A line is also sometimes named using a lower case letter A plane is a set of points that forms a complete flat surface and extends in all directions indefinitely. It has no thickness. Although it has no edges, we usually denote it with a 4-sided figure often labeled with a capital letter or 3 letters on the plane representing points on the plane not on the same line. Although we have described a point, line, and a plane, they are considered to be undefined terms. These undefined terms are then used in the definition of other terms. A definition is a statement of precise meaning of a term. We must define a word or term in words that have been defined or accepted as undefined terms such as a point, line, or plane. Definition: A collinear set of points is a set of points all of which lie on the same straight line. Definition: A non-collinear set of points is a set of 3 or more points that do not all lie on the same straight line. Definition: A coplanar set of points is a set of points all of which lie on the same plane. Sample Test Question: Choose the correct statement/statements. 1. Points F, A, L, I, C, G, E, O, and B are coplanar. 2. Points G, E, F, and A are coplanar. 3. O, A, and B are coplanar. 4. Points F, A, L, I, C are coplanar. Choices: A. 1 and 2 only C. 4 only B. 3 and 4 only D. 1 only 3 4