Q2 W8 Dec 9-13 Pre-Algebra

TeacherStephanie Durrance
Subject Area8th Grade Math (Pre-Algebra)
Grade Level8th
Week #8
Unit of InstructionFocus 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


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


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


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***

Additional Resources

Khan Academy videos – type any topic in search bar followed by Khan Academy to find an instructional video for additional support.

IXL – Provides support for any grade level math standard.