Friday, February 29, 2008
Algebra (Class 55)
Lesson Title
Mathematical Reflection- Systems of Linear Equations
Overview
in today’s class the warm-up focuses on making a table to represent a given situation and then using patterns in the table to make predictions. The lesson for the day is focuses on summarizing the concepts and skills related to systems of linear equations and continuing to practice putting these skills and concepts to work. Also during the class we take test 10 focusing on systems of linear equations.
Textbook Sections
Structure and Method §9-4 ( p.426) The Addition-or-Subtraction Method
Vocabulary
systems of equations
eliminate variable
isolate
solution to an equation
Key Attitudes
Math is about investigating and confirming
Key Ideas
An equation with two variables has many solutions.
In order for a number(s) to be a solution(s) to an equation, the numbers must make the equation true when substituted into the equation.
Equations can be written in different forms.
Two equations can be equivalent but be in different forms.
In order for a point to be the solution of a system of equations, the point must be located at the intersection of the graphs.
Lines only intersect once, all the time, or not at all.
Key Skills
Creating an equation with two variables to represent a situation.
Graphing equations in standard form or slope intercept form.
Estimate the location of the point of intersection of two lines from a graph.
Solving a system of two linear equations using graphing, substitution, or combination
Turn-In (#54)
§9-2 (Txt. p.419)#6
§9-3 (Txt. p. 427) #6
ACE p.42 #2, 4, 42, 43
Handouts
No Handouts Posted
Assignment
ACE p.42 #3, 11, 13, 17, 18, 23, 24, 48-52, 58-62
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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