# Q2 W9 Dec 16-20 Pre-Algebra

Teacher Stephanie Durrance 8th Grade Math (Pre-Algebra) 8th 9 Focus 6: Transformations, Focus 7: Angle-Pair Relationships
Standard(s) Taught
 MAFS.8.G.1.3: Describe the effect of dilations, translations, rotations, and reflections on two-dimensional figures using coordinates.

MAFS.8.G.1.4: Understand that a two-dimensional figure is similar to another if the second can be obtained from the first by a sequence of rotations, reflections, translations, and dilations; given two similar two-dimensional figures, describe a sequence that exhibits the similarity between them.

Learning Targets and Learning Criteria
 • describe the changes occurring to x- and y- coordinates of a figure after a translation, reflection, rotation, or dilation. • reason that a 2-D figure is congruent to another if the second can be obtained by a sequence of rotations, reflections, translation. • describe the sequence of rotations, reflections, translations that exhibits the congruence between 2-D figures using words

explain how transformations can be used to prove that two figures are similar. • describe a sequence of transformations to prove or disprove that two given figures are similar. • know the definition of similar and why dilation alone is not enough to determine similarity.

Classroom Activities
 Monday/Tuesday: Bellringer: Number Sense Problem 48 (5 min) Whole Group: SMT 2 Review Individual: Begin SMT 2 Wednesday: Bellringer: Number Sense Problem 49 (5 min) Individual: Finish SMT 2 Thursday/Friday: TDD – No School for Students All IEP and ESOL accommodations provided daily.
Assignments Due
 ·         Homework: IXL- N/A

Exit Tickets: SMT 2