Friday, November 07, 2008
Geometry (Class 26)
Lesson Title
Logic Puzzles (1)
Overview
The warm-up for the day is our last “Fit the Units” problem where students are asked to match the correct metric units to a story. Students also have an opportunity to work another Model Drawing Problem involving circles on the coordinate plane.
In the lesson today students are introduced to logic puzzles and techniques for representing these using symbols. Students learn that the symbols can help them construct a chain of reasons to arrive at a conclusion.
Lastly, students will be taking their 5th test.
Textbook Sections
§2.1 (Txt. p.71) Conditional Statements
Vocabulary
implication
deduction
syllogism
Key Attitudes
Math is about thinking creatively.
Key Ideas
Logic problems can be solved by symbolizing the statements and building a chain of reasons (a “syllogism”).
Key Skills
I can use symbols to represent a conditional statement (an “If…, then…” statement).
I can identify the hypothesis and conclusion of a conditional statement
I can build a syllogism (an If…, then… chain of reasons).
I can state the conclusion of a syllogism.
I can create the contrapositive of an implication.
I can create the inverse of an conditional statement.
I can write conditional statements.
Turn-In (#25)
Finish Chapter 2- Lesson 1: Missing Angle Puzzles
Practice Missing Angle Puzzles
Txt. p.796 #8, 9
Txt. p. 47 #34-36, 42, 46, 49
Handouts
Chapter 2- Lesson 2: Logic Puzzles
Assignment
Txt. p.796 #10, 11
Txt. p. 47 #37, 38, 43, 44, 47, 48, 50, 51
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.
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