Doug Doblar
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Geometry Strand

The sequence of lessons below are for the 8th grade Geometry strand, paced for Georgia 7th-accelerated, which is closely aligned to the Common Core.
1 - Adjacent, Complementary, and Supplementary Angles
2 - Vertical Angles
3 - Solving for Unknown Values In Angle Problems
4 - Corresponding Angles
5 - Advanced Parallel Lines and Transversal Problems
6 - Angle Problems With Variables on Both Sides
7 - Interior Angles of Triangles
8 - Exterior Angles Theorem
9 - Triangle Problems with Variables
10 - Similar Triangles
11 - Similar Triangle Problems
Introduction to Transformations
12 - Translating a Figure In The Coordinate Plane
13 - What happens to the coordinates of the vertices after a translation?
14 - Reflecting a figure in the coordinate plane
15 - What happens to the coordinates of the vertices after a reflection?
16 - How to rotate a figure in the coordinate plane
17 - What happens to the coordinates of the vertices after a rotation?
18 - Dilating a Figure In the Coordinate Plane
19 - What Happens to the Coordinates of the Vertices After A Dilation?
20-21 - Multiple Transformations
Picture
20 - How to Use the Pythagorean Theorem to Find A Right Triangle's Hypotenuse
21 - Using the Pythagorean Theorem to Find Distances
22 - Is it a Right Triangle?
23 - How to Find a Missing Leg
24 - Using the Pythagorean Theorem to Find Diagonals in 3-D Figures
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  • Home
  • Math Videos
    • 4th Grade Math >
      • Numbers - Base 10
      • Operations and Algebraic Thinking
      • Numbers - Fractions
      • Geometry
      • Measurement and Data
    • 6th Grade Math >
      • Number System (6th)
      • Ratios and Proportional Thinking (6th)
      • Expressions and Equations (6th)
      • Geometry (6th)
      • Statistics and Probability (6th)
    • 7th Grade Math >
      • Ratios-Rates-Proportions-7th
      • Expressions and Equations (7th)
      • Number System (7th)
      • Geometry (7th)
      • Statistics and Probability (7th)
    • 8th Grade Math >
      • Number System (8th)
      • Expressions and Equations (8th)
      • Functions (8th)
      • Geometry (8th)
      • Statistics and Probability (8th)
  • Blog Topics
    • Thinking Classroom
    • Leaning Into Science and Engineering
    • Classroom Practices
    • Classroom Stories
    • Ideas and Opinions
    • Pandemic-Related Issues
  • About
  • Now