Thursday, April 24, 2008
Algebra (Class 72)
Announcements
Test Friday, April 18 focusing on quadratic relationships.
Lesson Title
Factoring Quadratic Expressions
Overview
The warm-up for today remains focused on solving balance problems which require converting units. In the lesson we continue working with quadratic relationships by learning how to reverse the expanding process in order to factor quadratic expressions.
Textbook Sections
Supplemental
Connected Math: Frogs, Fleas, and Painted Cubes- Problem 2.4 Factoring Quadratic Expressions
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 make a rectangle diagram to help me factor a quadratic expression.
I can use a rectangle model to factor a quadratic expression
I can use the distributive property (in reverse) to rewrite an expression given in expanded form in factored form.
Turn-In (#71)
ACE p.30 #6, 7, 10, 11, 17, 19, 20, 21, 23-25, 56-58
Test Corrections
Handouts
No Handouts Posted
Assignment
ACE p.30 #10, 11, 14, 15, 26-29, 50a, c (skip b)
Partner Challenge with someone
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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