Download 8th Grade LA:

Math 8 Periods 5 & 6
October 5 - 9, 2015
Objectives: The students will
 Improve fluency and accuracy of basic calculations
 Be introduced to vocabulary and rotation related to rigid
motions (e.g., transformation, image, and map)
 Be introduced to transformations of the plane and learn
that a rigid notion is a transformation that is distance
preserving
 Use transparencies to imitate a rigid motion that moves or
maps one figure to another figure in the plane
 Perform translations of figures along a specific vector and
label the image of the figure using appropriate notation
 Learn that a translation maps lines to lines, rays to rays,
segments to segments, and angles to angles
Module 2: The Concept of Congruence
Geometry (G)
Understand congruence and similarity using physical models, transparencies, or geometry software.
Enduring Understandings
• In congruent polygons, corresponding sides and angles are congruent.
• A figure with line symmetry can be folded over a line so that the two halves match.
• In a reflection, the image is congruent to the original figure, but the orientation of the image is different from
that of the original figure.
• In a translation, the image is congruent to the original figure, and the orientation of the image is the same as
that of the original number.
Essential Questions:
• What is a transformation?
• What is the difference between a translation, rotation, and reflection?
• Can you form an image from a pre-image using different transformations?
Focus Standards:
 8.G.A.1 Verify experimentally the properties of rotations, reflections, and translations:
 a. Lines are taken to lines, and line segments to line segments of the same length.
 b. Angles are taken to angles of the same measure.
 c. Parallel lines are taken to parallel lines.
Mathematical Practices
 MP2 Reason abstractly and quantitatively
 MP3 Construct viable arguments and critique the reasoning of others
 MP5 Use appropriate tools strategically
 MP6 Attend to precision
Class Work
Monday
October 5
1. End of Module Assessment
Tuesday
October 6
1. Complete Agenda
2. Module 2 pre-assessment
3. Module 2 vocabulary
4. M2, Lesson 1, “Why Move Things Around?”
Homework
None
L1: Exploratory Challenge
(S.1`-S.2)
L1: Problem Set
(S.3)
 Frayer Model Vocabulary “cards”
 SmartBoard interactive lesson
 Guided Notes and practice
Wednesday
October 7
1. Facts Test
2. M2, Lesson 1, then Lesson 2, “Definition of Translation and
Three Basic Properties”
 SmartBoard interactive lesson
 Guided notes and practice
Thursday
October 8
1. Facts Test
2. M2, L3, “Translating Lines” (Student Materials, p. S.8 – S.11)
 Exploration with Exercises 1-4/Socratic Discussion
 Guided Notes
Interactive SmartBoard Lesson
Friday
October 9
1. Continue/Complete Lesson 3
2. Exit Ticket Lesson 3
Translations & Vectors
(handout
Complete Lesson 3
Exercises/Problem Set as
directed