Unit 8: Applying Geometric Concepts
Cluster 8: Applying Geometric Concepts
In this unit, students build spatial sense by noticing symmetry and attributes of two-dimensional shapes and using these attributes to identify them. They use tools to draw, sketch, and measure lines, angles, and shapes. Students build connections between geometry and number by generating and analyzing shape patterns to find a rule and by estimating and assessing the reasonableness of their measurements.
Content Standards:
Classifying shapes based on lines and angles in two-dimensional figures.
4.G.1 Draw points, lines, line segments, rays, angles, and perpendicular and parallel lines. Identify these in two-dimensional figures.
4.G.2 Classify quadrilaterals and triangles based on angle measure, side lengths, and the presence or absence of parallel or perpendicular lines.
4.G.3 Recognize symmetry in a two-dimensional figure, and identify and draw lines of symmetry.
Understand concepts of angles and measure angles.
4.MD.6 Develop an understanding of angles and angle measurement.
4.OA.5 Generalize and analyze a number or shape pattern that follows a given rule.
In this unit, students build spatial sense by noticing symmetry and attributes of two-dimensional shapes and using these attributes to identify them. They use tools to draw, sketch, and measure lines, angles, and shapes. Students build connections between geometry and number by generating and analyzing shape patterns to find a rule and by estimating and assessing the reasonableness of their measurements.
Content Standards:
Classifying shapes based on lines and angles in two-dimensional figures.
4.G.1 Draw points, lines, line segments, rays, angles, and perpendicular and parallel lines. Identify these in two-dimensional figures.
4.G.2 Classify quadrilaterals and triangles based on angle measure, side lengths, and the presence or absence of parallel or perpendicular lines.
4.G.3 Recognize symmetry in a two-dimensional figure, and identify and draw lines of symmetry.
Understand concepts of angles and measure angles.
4.MD.6 Develop an understanding of angles and angle measurement.
- Understand angles as geometric shapes that are formed whenever two rays share a common endpoint, and are measured in degrees.
- Measure and sketch angles in whole-number degrees using a protractor.
- Solve addition and subtraction problems to find unknown angles on a diagram in real-world and mathematical problems.
4.OA.5 Generalize and analyze a number or shape pattern that follows a given rule.