5- Day Lesson Plan Unit: Linear Equations Grade Level: Grade 9 ...

32Lesson Topic: Introduction to system of equationsMaterials: TI-83 plus Calculator, Overhead with TI adaptor, Paper, PencilGrade Level: 9Lesson Overview: Students work with their TI-83 calculators to develop anunderstanding of solving a system of equations.Lesson Objectives:• Given a technical briefing of the TI-83 calculator, students will be able to entersystem of equations into the calculator.• Given instruction on the matrix program of the TI-83 calculator, students will beable to solve systems of equation.• Students will be able to explore equations on the calculator by graphing the linearequations.New York State Standards:• A.PS.4 – Use multiple representations to represent and explain problemsituations.• A.CM.2 – Use mathematical representations to communicate with appropriateaccuracy, including numerical tables, formulas, function, equations, charts,graphs, Venn diagrams, and other diagrams.• A.R.3 – Use representation as a tool for exploring and understandingmathematical ideas.• A.G.9 – Solve system of linear equations graphically.NCTM Standards• Represent and analyze mathematical situations and structures using algebraicsymbols.• Apply and adapt a variety of appropriate strategies to solve problems.• Communicate their mathematical thinking coherently and clearly to peers,teachers, and others.• Create and use representations to organize, record, and communicatemathematical ideas.Anticipatory Set: The teacher will present the problem:Solve the linear system: x + 4y = 4x- y = -6The class will have a discussion with the teacher on what it means to solve a system ofequation.Possible ideas: When the two linear lines cross. The two linear equations havethe same x and y value.Developmental Activity: