SCHOOL BOOK PAGE By Geni Solis TEKS SECOND

SCHOOL BOOK PAGE By: Geni Solis

TEKS SECOND GRADE “Geometry and measurement. The student applies mathematical process standards to analyze attributes of two-dimensional shapes and three-dimensional solids to develop generalizations about their properties. The student is expected to: (A) identify two-dimensional shapes, including circles, triangles, rectangles, and squares as special rectangles; (B) identify three-dimensional solids, including cylinders, cones, spheres, and cubes, in the real world; (C) identify two-dimensional components of three-dimensional objects; (D) identify attributes of two-dimensional shapes using informal and formal geometric language interchangeably; (E) classify and sort a variety of regular and irregular two- and three-dimensional figures regardless of orientation or size; and (F) create two-dimensional shapes using a variety of materials and drawings” http: //ritter. tea. state. tx. us/rules/tac/chapter 111/ch 111 a. html

TRANSFORMATION Definition: A transformation moves a figure to a new position without changing its shape or size.

EXAMPLES Translation – Moves a figure in a straight direction. Reflection – Reflection of a figure gives it a mirror image over a line. Glide Reflection – A translation followed by a reflection. Rotation – Moves a figure about a point.

INTERACTIVE TRANSFORMED FIGURE http: //www. mat hsisfun. com/geo metry/rotation. ht ml

TRANSLATION Definition: A transformation of the plane to itself such that every point P in the plane has an image P’=MN, PP||MN, and the direction from the P to P’ is the same as M to N.

EXAMPLE A child going down a slide without twisting or turning.

INTERACTIVE TRANSLATION FIGURE http: //www. mat hsisfun. com/geo metry/translation. html

REFLECTION Definition: A reflection of a figure gives it a mirror image over a line.

EXAMPLE The reflection of a mountain top in a lake.

INTERACTIVE REFLECTED FIGURE https: //www. m athsisfun. com/ geometry/reflec tion. html

ROTATION Definition: Moves a figure about a point.

EXAMPLE A Ferris Wheel at the carnival.

INTERACTIVE ROTATING FIGURE https: //www. ma thsisfun. com/geo metry/rotation. ht ml

SOURCES www. mathisfun. com A Problem Solving Approach to Mathematics for Elementary School Teachers Activities Manual. N. p. : Pearson College Div, 2015. Print.