Tuesday, April 22, 2008
Algebra (Class 71)
Announcements
Test Friday, April 18 focusing on quadratic relationships.
Lesson Title
Changing Two Dimensions
Overview
The warm-up for today’s class deals with solving a balance problem which requires converting units. In the lesson today we focus on factoring and expanding quadratic expressions.
Textbook Sections
Supplemental
Connected Math: Frogs, Fleas, and Painted Cubes- Problem 2.3 Changing Two Dimensions
Vocabulary
rectangle
area
perimeter
maximum
quadratic relationship
parabolas
function
symmetry
line of symmetry
x-intercepts
roots
y-intercepts
parabola
expression
factored form
expanded form
Key Attitudes
Math is about investigating and confirming
Key Ideas
Quadratic expressions can be written in expanded or factored form.
An expression is written in expanded form when the expression is the sum or difference of terms.
An expression is written in factored form when the expression is the product of factors.
Key Skills
I can write an expression to represent the area of a rectangle in two different ways-- as the product of the length and the width (factored) or as the sum of the individual areas (expanded)
I can use the distributive property to expand an expression written in factored form.
Turn-In (#70)
ACE p.30 #2 - 5, 8, 9, 12, 13, 16, 18
Handouts
No Handouts Posted
Assignment
ACE p.30 #6, 7, 10, 11, 17, 19, 20, 21, 23-25, 56-58
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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