Lesson Plan: Lesson plans were written by Maryland mathematics educators and could be used when teaching the concepts.
Goal 2 Geometry, Measurement, And Reasoning
Expectation 2.1 The student will represent and analyze two- and three-dimensional figures using tools and technology when appropriate.
Indicator 2.1.3 The student will use transformations to move figures, create designs, and/or demonstrate geometric properties.
Line Symmetry and Reflections
The student will be able to identify similarities and differences between the images and pre-images generated by reflections, apply reflections to determine the coordinates of figures, and apply reflections to real-world situations.
National Council of Teachers of Mathematics (NCTM). Navigating Through Geometry in Grades 6-8, 2002, Chapter 3 - Transformations and Symmetry, pp. 43-58.
National Council of Teachers of Mathematics (NCTM). Navigating Through Geometry in Grades 9-12, 2001, Chapter 1 - Transforming Our World, pp. 9-26.
Dixon, Juli, Movements in the Plane: Conjecturing about Properties of Transformations, NCTM Math On-Line January 2003