Georgia 4.GSR.8

4.GSR.8 is a Georgia mathematics standard. These are the expectations under it.

• 4.GSR.8.1

  Explore, investigate, and draw points, lines, line segments, rays, angles (right, acute, obtuse), perpendicular lines, parallel lines, and lines of symmetry. Id...

• 4.GSR.8.2

  Classify, compare, and contrast polygons based on lines of symmetry, the presence or absence of parallel or perpendicular line segments, or the presence or abse...

• 4.GSR.8.3

  Solve problems involving area and perimeter of composite rectangles involving whole numbers with known side lengths.

01

What Students Need to Do

Students identify, name, and draw points, lines, rays, segments, angles, and polygons. They sort polygons by properties and find missing lengths, area, or perimeter in rectangular figures.

02

What Mastery Looks Like

Students accurately draw and label geometric objects using a ruler or protractor when needed. They classify polygons from stated properties and solve rectangular area and perimeter problems with correct units.

03

Common Misconceptions

Students may confuse lines, rays, and line segments, or classify a square as not being a rectangle. They may mix up area and perimeter or use the wrong units.

04

How to Assess It

Give students an exit ticket: draw a ray and a right angle, classify a given quadrilateral in all possible ways, then find a 6-by-4 rectangle’s area and perimeter.

1. 01

   Give pairs straws and craft sticks to build lines, rays, angles, and polygons, then label each object and list its properties.

2. 02

   Ask students to explain in writing why every square is a rectangle but not every rectangle is a square.

3. 03

   Play polygon sorting bingo using cards that show shapes, side lengths, angle types, parallel sides, area, or perimeter clues.

4. 04

   Measure a classroom tabletop, then calculate how much border trim and covering material would be needed using perimeter and area.

• 3.GSR.6.1

  Identify perpendicular line segments, parallel line segments, and right angles, identify these in polygons, and solve problems involving parallel line segments,...

• 3.GSR.6.2

  Classify, compare, and contrast polygons, with a focus on quadrilaterals, based on properties. Analyze specific 3-dimensional figures to identify and describe q...

• 5.GSR.8

  Examine properties of polygons and rectangular prisms, classify polygons by their properties, and discover volume of right rectangular prisms.

• 1.GSR.4.1

  Identify common two-dimensional shapes and three-dimensional figures, sort and classify them by their attributes and build and draw shapes that possess defining...