Doug Doblar
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GEometry strand

The sequence of lessons below are for the 4th grade Geometry strand for Georgia 4th grade, which is closely aligned to the Common Core.
Click here to view this strand as a YouTube playlist

Points, Lines, Line Segments, and Rays
1_-_points_lines_line_segments_and_rays.pdf
File Size: 407 kb
File Type: pdf
Download File

Naming Points, Lines, Line Segments, Rays, and Shapes
2_-_naming_points_lines_line_segments_rays_and_shapes.pdf
File Size: 570 kb
File Type: pdf
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Perpendicular, Parallel, and Intersecting
3_-_intersecting_parallel_and_perpendicular_lines.pdf
File Size: 952 kb
File Type: pdf
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Identifying Features in Polygons
4_-_identifying_features_in_polygons.pdf
File Size: 457 kb
File Type: pdf
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My Many Triangles
Instead of direct instruction, I use the My Many Triangles activity from the Georgia Math Frameworks to help students get comfortable with finding geometric features in triangles.
5_and_6_-_my_many_triangles.pdf
File Size: 265 kb
File Type: pdf
Download File

Classify Triangles Wrap-Up
8_-_classify_triangles_wrap-up.pdf
File Size: 812 kb
File Type: pdf
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Quadrilateral Round-Up
Instead of direct instruction, I use the Quadrilateral Round-Up activity from the Georgia Math Frameworks to help students get comfortable with finding geometric features in quadrilaterals.
8-9_-_quadrilateral_roundup.pdf
File Size: 184 kb
File Type: pdf
Download File

8-9_-_quadrilateral_roundup_full.pdf
File Size: 184 kb
File Type: pdf
Download File

Quadrilateral Wrap-Up
10_-_quadrilateral_wrap-up.pdf
File Size: 1367 kb
File Type: pdf
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Recognize Lines of Symmetry
11_-_recognize_lines_of_symmetry.pdf
File Size: 770 kb
File Type: pdf
Download File

Line Symmetry
Instead of direct instruction, I use the Line Symmetry activity from the Georgia Math Frameworks to help students get comfortable with finding lines of symmetry.
12_line_symmeter.pdf
File Size: 393 kb
File Type: pdf
Download File

Deciding Which Measurement on the Protractor is the Right One (No Recording)
Using a Protractor to Measure Angles (No Recording)
Types of Angles - Expanded - Adding Straight and Reflex Angles
Angle Addition and Subtraction
Angle Subtraction Problems
Angles, Arcs, and Turns
Angles and Fractions of Circles
Circle-Angle Test Questions
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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