# Q2 W8 Dec 9-13 Pre-Algebra

Teacher Stephanie Durrance 8th Grade Math (Pre-Algebra) 8th 8 Focus 7: Angle-Pair Relationships
Standard(s) Taught

MAFS.8.G.1.5: Use informal arguments to establish facts about the angle sum and exterior angle of triangles, about the angles created when parallel lines are cut by a transversal, and the angle-angle criterion for similarity of triangles.

Learning Targets and Learning Criteria

• informally prove the angle-sum theorem, the properties of angles when parallel lines are cut by a transversal and the angle-angle criterion for similar triangles. • prove that the sum of any triangle’s interior angles will have the same measure as a straight angle. • make conjectures regarding the relationships and measurements of the angles created when two parallel lines are cut by a transversal. • apply proven relationships to establish minimal properties to justify similarity. • present informal arguments as to whether or not triangles are similar based on Angle-Angle criterion

Classroom Activities
 Monday: Bellringer: Number Sense Problem 45 (5 min) Whole Group: Interactive Student Notebook (ISN) – Angle Relationships in Triangles and Similar Triangles (30 min) Small Group: Three rotations at 20 minutes each. (1 hour) Rotation 1 – Teacher Group (Ready Math Book) –Pages 191-193: Understand Angle Relationships (I Can task cards) Rotation 2 – Partners (Worksheet) – Similar Triangles Worksheet Rotation 3 – Independent (Technology) – IXL: O.7 Wednesday: Bellringer: Number Sense Problem 46 (5 min) Whole Group: Students will work on I-Ready lessons. DIA 3 Review on Transformations Independent: IXL – O.11 Thursday/Friday: Bellringer: Number Sense Problem 47 (5 min) Whole Group: Review of Transformations and Angle-Pair Relationships Independent: DIA 3 on Transformations and Angle-Pair Relationships All IEP and ESOL accommodations provided daily.
Assignments Due
 ·         Homework: IXL- O.7, O.11 ·         Exit Tickets: “I Can” Task Cards –Angle Relationships in Triangles, Similar Triangles Worksheet, DIA 3

***IXL Recording Log Due 12/13***