Skowhegan Area High School
 Topics Introduction Using Slope and Distance to determine the midpoint and type of polygon (parallel and perpendicular) Geometric and rigid transformations Size Transformations Matrices GEOEXPLOR Multiplication and Addition Algorithms Unit Review Quiz Unit Review Quiz Answers
 MATH II UNIT 2 Margaux Shute, Ramie Merrill, and Jen Button Maine Learning Results: E1 E2 H3 I4 This unit focuses on coordinate geometry. Just as Rene Descartes’ (1596-1650) work in coordinate geometry permitted both algebra and geometry move forward, the introduction of coordinate geometry in Course 2 of the Contemporary Mathematics in Context curriculum advances the algebra and geometry concepts begun in Course 1. The representations of shapes in the plane and of transformations in the plane now are explored systematically using coordinate geometry. Coordinate models also lead to a simple, yet powerful, base for compute animations. In the case of algebra, coordinate geometry permits a closer look at linear models and their properties. Systems of linear equations are revisited from an algebraic point of view, and the geometry of systems of linear equations is studied, leading to the linear combination method of solving systems. The use of matrices as a representation tool is extended to describing shapes and transformations, thereby underscoring the connectedness of strands within the curriculum and the utility of matrices as a connector.