Created ready-to-use Git-integrated lesson for high school Geometry
demonstrating how to apply classroom Git workflows to actual instruction.

Lesson: One Hundred Eighty - Triangle Angle Sum Theorem
Duration: 50 minutes
Topic: Prove that angles in a triangle sum to 180 degrees

Teacher Materials:
- TEACHER_SETUP_One_Hundred_Eighty.md: Complete lesson plan with
  minute-by-minute timeline, Git monitoring commands, grading workflow,
  differentiation strategies, and troubleshooting guide
- README_LESSON_One_Hundred_Eighty.md: Overview, quick start guides,
  standards alignment, and lesson structure

Student Materials:
- LESSON_STUDENT_WORKFLOW_One_Hundred_Eighty.md: Student guide with
  Git commands for each activity, troubleshooting, and checklist

Student Work Templates (all ready to use):
- Warmup-What-Went-Wrong.md: Error analysis activity (10 min)
- Activity1-Angle-Sum-Proof.md: First proof method with auxiliary line (15 min)
- Activity2-Another-Proof.md: Second proof method with comparison (10 min)
- Activity2-Extension.md: Polygon angle sum extension problem (optional)
- Cooldown-Third-Proof.md: Exit ticket - third proof method (5 min)
- Reference-Chart.md: Ongoing student reference chart template

Git Integration Features:
- Students commit 5-7 times during lesson
- Teacher monitors progress in real-time
- Exit ticket submitted via Git tag
- Formative assessment through commit history
- Differentiation via branches and feedback files
- Absent student makeup supported automatically

Key Features:
- Fully scaffolded templates with sentence frames
- MLR support (Compare and Connect)
- Multiple access points for diverse learners
- Extension work for advanced students
- Rubric and grading workflow included
- Parent communication examples
- Complete troubleshooting guide

Ready for immediate classroom use tomorrow!

Created complete Git-integrated lesson for Transformations, Transversals
and Proof, plus comprehensive mastery check for the Angles and Proof unit.

LESSON 2: Transformations, Transversals and Proof
Duration: 50 minutes
Prerequisites: One Hundred Eighty lesson (Triangle Angle Sum)
Topic: Using transformations to prove angle relationships with transversals

Teacher Materials:
- TEACHER_SETUP_Transformations_Transversals.md: Complete lesson plan
  with timeline, mastery check access protocol, differentiation strategies,
  and monitoring commands
- README_LESSON_Transformations_Transversals.md: Overview, quick start,
  standards alignment, self-paced classroom integration

Student Materials:
- LESSON_STUDENT_WORKFLOW_Transformations_Transversals.md: Student guide
  with Git workflow, mastery readiness tagging instructions

Student Work Templates (templates-transformations/):
- Warmup-Transformation-Review.md: Review rigid transformations (10 min)
- Activity1-Alternate-Interior-Angles.md: Prove alternate interior angles
  theorem using 180° rotation (15 min)
- Activity2-Angle-Relationships.md: Prove corresponding and same-side
  interior angles theorems (15 min)
- Activity3-Complex-Diagrams.md: Apply multiple theorems together (10 min)
- Cooldown-Proof-Challenge.md: Exit ticket with mastery readiness self-check (5 min)

MASTERY CHECK: Angles and Proof Unit
File: templates-mastery/Mastery-Check-Angles-Proof.md
Time: 40 minutes
Covers: Both One Hundred Eighty and Transformations lessons

Assessment Structure:
- Section 1: Triangle Angle Sum Theorem (20 pts)
  * Basic application
  * Proof of theorem
  * Algebraic application
- Section 2: Transversal Angle Relationships (30 pts)
  * Identify angle pairs
  * Apply theorems to find angles
  * Prove corresponding angles theorem
  * Algebraic application
- Section 3: Combined Application (30 pts)
  * Complex diagrams
  * Multi-step proofs
  * Use both lessons' theorems together
- Section 4: Reflection and Metacognition (5 pts)
  Total: 85 points

Mastery Levels:
- 75-85 points: Mastery (4) - Move to next unit
- 65-74 points: Proficient (3) - Move on or revise
- 55-64 points: Developing (2) - Revision required
- <55 points: Beginning (1) - Review and resubmit

Key Features:
- Self-paced mastery check access (students tag when ready)
- Teacher reviews readiness before granting access
- Revision workflow supported
- Complete Git submission and feedback workflow
- Academic honesty pledge included
- Clear scoring rubric and mastery levels

Git Integration:
- Students commit 5-7 times during Transformations lesson
- Tag lesson completion
- Tag mastery readiness (optional)
- Teacher monitors via commits and tags
- Mastery check submitted via Git tag
- Feedback delivered via Git

Ready for classroom use! Complete unit now available:
Lesson 1 (One Hundred Eighty) + Lesson 2 (Transformations) + Mastery Check