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Marisa Laks

Geometry

The Global Learning Collaborative

New York, NY

Urban Environment

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View all Master TeachersGeometry

(14 Units, 97 Lessons)

Unit 6 - Introduction to Geometric Proofs(10 Lessons)

Unit 1 - Preparing for the Geometry Course(2 Lessons)

Unit 2 - Geometric Constructions(13 Lessons)

Unit 3 - Transformational Geometry(10 Lessons)

Unit 4 - Rigid Motions(3 Lessons)

Unit 5 - Fall Interim Assessment: Geometry Intro, Constructions and Rigid Motion(5 Lessons)

Unit 6 - Introduction to Geometric Proofs(10 Lessons)

Unit 7 - Proofs about Triangles(11 Lessons)

Unit 8 - Common Core Geometry Midcourse Assessment(5 Lessons)

Unit 9 - Proofs about Parallelograms(10 Lessons)

Unit 10 - Similarity in Triangles(10 Lessons)

Unit 11 - Geometric Trigonometry(3 Lessons)

Unit 12 - The Third Dimension(5 Lessons)

Unit 13 - Geometric Modeling(3 Lessons)

Unit 14 - Final Assessment(7 Lessons)

Converses and Inverses

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students need to understand mathematical logic in order to write formal proofs. This lesson provides an introduction to logic through the context of Alice's Adventures in Wonderland by Lewis Carroll.

20 Resources

20 Favorites

20 Resources

20 Favorites

Contrapositives

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students will build on the previous lesson on inverses and converses to further investigate logic through the context of Alice's Adventures in Wonderland by Lewis Carroll.

15 Resources

6 Favorites

15 Resources

6 Favorites

Biconditionals

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students examine conditional statements and their converses in order to write biconditional statements. This lesson prepares students for the unit on geometric proofs.

18 Resources

6 Favorites

18 Resources

6 Favorites

What are Geometric Proofs?

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:In this lesson, students will explore the concept of proof in geometry.

15 Resources

10 Favorites

15 Resources

10 Favorites

Algebraic Proofs

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students will look at postulates needed for geometric proof and apply them to algebraic proofs.

18 Resources

10 Favorites

18 Resources

10 Favorites

Proofs using Postulates

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students will explore the equality postulates used in geometric proofs.

17 Resources

9 Favorites

17 Resources

9 Favorites

Proofs about Angles

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students will apply postulates to write two column proofs using vertical angles, complementary angles and supplementary angles.

16 Resources

10 Favorites

16 Resources

10 Favorites

Parallel Lines Intersected by a Transversal

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students will build on prior knowledge about the relationships between angles and parallel lines to write formal proofs.

20 Resources

12 Favorites

20 Resources

12 Favorites

Proofs about Perpendicular Bisectors

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:The proof is in the paragraph: Proofs about points on a perpendicular bisector.

13 Resources

2 Favorites

13 Resources

2 Favorites

Introduction to Proofs Assessment

Geometry

» Unit:

Introduction to Geometric Proofs

Big Idea:Students answer a combination of multiple choice, true/false, short and long answer questions to demonstrate their understanding of the concepts studied in the Introduction to Geometric Proofs unit.

6 Resources

4 Favorites

6 Resources

4 Favorites