# ALEX Classroom Resource

## Polygraph Transformations

Classroom Resource Information

Title:

Polygraph Transformations

URL:

https://teacher.desmos.com/polygraph/custom/560c53f5441172070b26220a

Content Source:

Other
Desmos
Type: Learning Activity

Overview:

This Custom Polygraph is designed to spark vocabulary-rich conversations about transformation. Key vocabulary that may appear in student questions includes translation, rotation, reflection, dilation, scale factor, pre-image, and image. In the early rounds of the game, students may notice graph features from the list above, even though they may not use those words to describe them. After most students have played 2-3 games, consider taking a short break to discuss strategy, highlight effective questions, and encourage students in their use of increasingly precise academic language. This activity should be used to help teach a lesson on transformations. This Desmos activity offers sample student responses and a teacher guide.

Content Standard(s):
 Mathematics MA2015 (2016) Grade: 8 17 ) Understand that a two-dimensional figure is congruent to another if the second can be obtained from the first by a sequence of rotations, reflections, and translations; given two congruent figures, describe a sequence that exhibits the congruence between them. [8-G2] NAEP Framework NAEP Statement:: 4G2e: Match or draw congruent figures in a given collection. NAEP Statement:: 8G2e: Justify relationships of congruence and similarity and apply these relationships using scaling and proportional reasoning. NAEP Statement:: 8G3c: Represent problem situations with simple geometric models to solve mathematical or real-world problems. NAEP Statement:: 8G3f: Describe or analyze simple properties of, or relationships between, triangles, quadrilaterals, and other polygonal plane figures. Alabama Alternate Achievement Standards AAS Standard: M.AAS.8.17- Given a geometric figure and a vertical or horizontal translation and reflection across a vertical or horizontal line, identify the components (lines/sides, angles) of the two figures that are congruent (limited to non-equilateral rectangles and triangles).
Tags: dilation, rotation, transformations, translation
See Terms: https://www.desmos.com/terms
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