Grade 8 Geometry Complete Unit | 12 Lessons | 8.G

A complete 14-day unit for Grade 8 Geometry, grounded in the Class Building Design scenario. Every lesson connects to the same authentic context, so students see how 8.G skills work together instead of as disconnected topics.

Every lesson connects to the class designing a school or recreation building - using rigid transformations to position rooms on blueprints, dilations for scale models, identifying congruent classrooms and similar roof triangles, working with parallel hallways cut by stairway transversals, applying the Pythagorean theorem to diagonal support beams and room-to-room distances, and computing volumes of cylindrical water tanks, conical roof features, and spherical decorative domes. Students see how 8.G skills come together to plan a real engineering project. The 12th lesson and summative performance task bring it all together.

What’s included:

• 12 Lesson PDF Decks (10 slides each, with full speaker notes)
• 12 Editable PPTX Decks (drop in your own examples)
• 12 Print-Ready Worksheets + Answer Keys with misconception notes
• 12 Exit Tickets (3 questions, 5 minutes each)
• 4 Anchor Chart Posters (wall-ready, dark background, unique hero diagram per chart)
• Pre/Post Assessment (10 questions) + Answer Key
• Class Building Design Plan Summative Performance Task (5 parts, 16 points)
• Problem-Solving Rubric (4 criteria, 4 levels, 16 points)
• 14-Day Pacing Guide
• Family Letter (editable)

Lesson sequence:

• Lesson 1. Translations - 8.G.A.1, 8.G.A.3
• Lesson 2. Reflections - 8.G.A.1, 8.G.A.3
• Lesson 3. Rotations - 8.G.A.1, 8.G.A.3
• Lesson 4. Congruence & Transformations - 8.G.A.2
• Lesson 5. Dilations & Similar Figures - 8.G.A.3, 8.G.A.4
• Lesson 6. Parallel Lines & Transversals - 8.G.A.5
• Lesson 7. Angle Sum of Triangles - 8.G.A.5
• Lesson 8. Pythagorean Theorem - 8.G.B.6, 8.G.B.7
• Lesson 9. Pythagorean Applications - 8.G.B.7
• Lesson 10. Distance Between Two Points - 8.G.B.8
• Lesson 11. Volume: Cones, Cylinders, Spheres - 8.G.C.9
• Lesson 12. Class Building Design Synthesis - 8.G (all)

Standards: 8.G.A.1, 8.G.A.2, 8.G.A.3, 8.G.A.4, 8.G.A.5