Locate and name points on a Example: Rethinking Middle coordinate plane using School Mathematics: ordered pairs of rational Geometry Across the If point B (5, is reflected across the –7) numbers. TEKS (TEXTEAMS) what will be the coordinates of ? Supporting Standard “Reflections.” (–5, –7) 8.14D Select tools such as real objects, manipulatives, Determine the relationship (or rule) paper/pencil, and technology between given ordered pairs of the or techniques such as mental original image and the reflected or math, estimation, and number translated image. sense to solve problems. Process Standard Example: 8.16A What rule describes the translation of to ? Make conjectures from Justify your answer. (x + 8, y 5) – patterns or sets of examples and nonexamples. Process Standard Evaluate reasonableness of solutions. 8.6B 3 5 Graph the dilations on a coordinate TAKS Mathematics TAKS Mathematics Graph dilations, reflections, plane (include rational numbers). Preparation Grade 8 Preparation Grade 8 and translations on a (Region 4) (Region 4) 3 “Objective coordinate plane. Dilation Selected Response “Coordinate Supporting Standard Lesson.” Questions,” 1, 2, 3. Graph dilations (enlargements and reductions) on a coordinate plane. 8.7D
Locate and name points on a coordinate plane using ordered pairs of rational numbers. Supporting Standard 8.14D Select tools such as real objects, manipulatives, paper/pencil, and technology or techniques such as mental math, estimation, and number sense to solve problems. Process Standard 8.16A Make conjectures from patterns or sets of examples and nonexamples. Process Standard Example: If point B (5, –7) is reflected across the what will be the coordinates of ? (–5, –7) Determine the relationship (or rule) between given ordered pairs of the original image and the reflected or translated image. Example: What rule describes the translation of to ? Justify your answer. (x + 8, y – 5) Evaluate reasonableness of solutions. Rethinking Middle School Mathematics: Geometry Across the TEKS (TEXTEAMS) “Reflections.” 8.6B Graph dilations, reflections, and translations on a coordinate plane. Supporting Standard 8.7D 3 5 Graph the dilations on a coordinate plane (include rational numbers). Graph dilations (enlargements and reductions) on a coordinate plane. TAKS Mathematics Preparation Grade 8 (Region 4) “Coordinate Dilation Lesson.” TAKS Mathematics Preparation Grade 8 (Region 4) “Objective 3 Selected Response Questions,” 1, 2, 3.
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