Algebra+-+Systems+of+Linear+Equations

Melissa Seidl & Phil Sanderson

This is the first time students will see a bridge map. Simple analogy used to demonstrate meaning.
 * __Systems of Linear Equations__**

Real life problem - comparing 2 cell phone plans introduced. Students brainstorm to determine which is the better plan. Allow discussion to lead to the conclusion "it depends." Students will calculate cost of plans based on number of minutes used. After several comparison's are made, students will begin to see a pattern - hopefully seeing the problems as equations in slope-intercept form. Ask what is the magic number that will make both plans cost the same. Explain the relationship between the phone plans and systems of linear equations.

Introduce bridge map with simple anology. Discuss the relationship between the analogies. Show bridge map with equations and the relating factor being "the solution of." Use bridge map to draw connections between the solution of the system and the solution of the graphs. Explain they are the same!!!! Students are given a copy of the bridge map (slide 5 of notebook file). As a class, a definition for system of equations is determined as is the solution to the system. Examples of graphing linear equations are provided.

As an exit activity, students are given a bridge map to complete independently. An example will be displayed on the Smart Board. (See attached file: exit quiz)

This is the color version of the Maps I brought
 * __Flow/Tree Map of 3 Methods for Solving Systems of Linear Equations__**
 * __[[file:visuals for 3 methods.notebook]]__**