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Explore 2: Rotations, Reflections, and Translations
Presentation
•
Mathematics
•
8th Grade
•
Practice Problem
•
Medium
+2
Standards-aligned
Ashley Proctor
Used 8+ times
FREE Resource
6 Slides • 7 Questions
1
Multiple Select
BELL RINGER (8.5B)
The value of y is 3 more than twice the opposite of x. Which of these represent this relationship? Select TWO correct answers.
El valor de y es 3 veces más que el opuesto de x. ¿Cuáles de estas opciones representan esta relación? Seleccione DOS respuestas correctas.
y = -2x + 3
2
Transformations
Rotations, Reflections, and Translations
3
T
O
D
A
Y
Rotations, Reflections, and Translations
Students will explain the effect of translations, reflections over the x- and y- axis, and rotations limited to 90°, 180°, 270°, and 360° as applied to two-dimensional shapes on a coordinate plane using an algebraic representation.
Given cards, students will explore the transformations of rotations, reflections, and translations of two-dimensional figures on coordinate planes, using coordinates to describe the changes and positions. with 100% accuracy.
Transformation (transformación), Rotation (rotación), Reflection (reflexión), Translation (traslación), Ordered Pair (Par ordenado)
When a figure undergoes rotation, reflection, or translation, what potentially changes—position, orientation, or size?
4
Patty Paper: Patty paper can be used to help you discover the transformation from one figure to the next.
Trace the original figure on the patty paper.
Rotation - TURN the patty paper
Reflection - FLIP the patty paper
Translation - SLIDE the patty paper across the paper
Try to line up the original image with the new image.
5
Drag and Drop
6
There are 6 colored pencils in your group. Each student select 2 colored pencils to use for this activity.
The color you chose represents the card number you will complete.
Complete each card task in order by plotting the given ordered pairs on the coordinate plane.
Write the card's number inside of your triangle as you complete the task.
Trace your triangle on your patty paper.
When you are done, discuss the movements each triangle made from one triangle to the next with your group.
Triangle Color
(10 minutes)
7
8
Multiple Choice
Triangle 1 (YELLOW) is the original triangle. What transformation occurred from Triangle 1 (YELLOW) to Triangle 2 (BLUE)?
El triángulo 1 (AMARILLO) es el triángulo original. ¿Qué transformación se produjo del triángulo 1 (AMARILLO) al triángulo 2 (AZUL)?
Rotation / Rotación
Reflection across the x-axis / Reflexión a través del eje x
Translation / Traslación
Reflection across the y-axis / Reflexión a través del eje y
9
Multiple Choice
What transformation occurred from Triangle 2 (BLUE) to Triangle 3 (PURPLE)? Use your patty paper to explore.
¿Qué transformación ocurrió del Triángulo 2 (AZUL) al Triángulo 3 (PÚRPURA)? Utilice su papel patty para explorar.
Rotation 90° clockwise /
Rotación de 90° en sentido horario
Rotation 180° clockwise /
Rotación de 180° en sentido horario
Translation 10 units left / Traducción Quedan 10 unidades
Reflection across the y-axis / Reflexión a través del eje y
10
Multiple Choice
What transformation occurred from Triangle 3 (PURPLE) to Triangle 4 (RED)? Use your patty paper to explore.
¿Qué transformación ocurrió del Triángulo 3 (PÚRPURA) al Triángulo 4 (ROJO)? Utilice su papel patty para explorar.
Translation 5 units left and 3 units down / Faltan 5 unidades y faltan 3 unidades
Rotation 180° clockwise /
Rotación de 180° en sentido horario
Translation 5 units right and 3 units down / Traducción 5 unidades a la derecha y 3 unidades hacia abajo
Reflection across the x-axis / Reflexión a través del eje x
11
Multiple Choice
What transformation occurred from Triangle 4 (RED) to Triangle 5 (GREEN)? Use your patty paper to explore.
¿Qué transformación ocurrió del Triángulo 4 (ROJO) al Triángulo 5 (VERDE)? Utilice su papel patty para explorar.
Translation 5 units left and 3 units down / Faltan 5 unidades y faltan 3 unidades
Rotation 180° clockwise /
Rotación de 180° en sentido horario
Reflection across the x-axis / Reflexión a través del eje x
Reflection across the y-axis / Reflexión a través del eje y
12
Multiple Choice
What transformation occurred from Triangle 5 (GREEN) to Triangle 6 (ORANGE)? Use your patty paper to explore.
¿Qué transformación ocurrió del Triángulo 5 (VERDE) al Triángulo 6 (NARANJA)? Utilice su papel patty para explorar.
Translation 4 units up and 2 units right / Traducción 4 unidades hacia arriba y 2 unidades hacia la derecha
Rotation 180° counter-clockwise /
Rotación 180° en sentido antihorario
Reflection across the x-axis / Reflexión a través del eje x
Reflection across the y-axis / Reflexión a través del eje y
13
Exit Ticket: The Rhombus Transformation
Now complete the exit ticket and turn it in before you leave.
BELL RINGER (8.5B)
The value of y is 3 more than twice the opposite of x. Which of these represent this relationship? Select TWO correct answers.
El valor de y es 3 veces más que el opuesto de x. ¿Cuáles de estas opciones representan esta relación? Seleccione DOS respuestas correctas.
y = -2x + 3
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