HolcombMath

Monday, April 28, 2008

Algebra (Class 73)

Announcements
Test Friday, April 18 focusing on quadratic relationships.

Lesson Title
A Closer Look At Parabolas

Overview
In today’s class our warm-up continues to focus on solving systems of equations in the form of a balance puzzle. The lesson for today brings us back to focus on the graphs of quadratic expressions and learn how the equations tell us the critical information we need in order to create a graph.
Textbook Sections
Supplemental
Connected Math: Frogs, Fleas, and Painted Cubes- Problem 2.5:  A Closer Look at Parabolas

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 change a quadratic equation from factored form to expanded form, or from expanded form to factored form.
I can find the x-intercepts from a quadratic equation written in factored form.
I can find the y-intercept of a graph of a quadratic equation when given a quadratic equation.
I can find the line of symmetry of a graph of a quadratic equation when given a quadratic equation.
I can find the vertex of a graph of a quadratic equation when given a quadratic equation.
I can match a graph of a quadratic equation to its equation written in expanded or factored form.
Turn-In (#72)
ACE p.30 #14, 15, 26-29, 50a, c (skip b)
Partner Challenge with someone

Handouts
No Handouts Posted

Assignment
ACE p.30 #30-33, 40, 44-47
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.