TEKS 4.6D: Classify Two-Dimensional Figures
Classify 2D Figures Based on Parallel or Perpendicular Lines
About this lesson
Learning Target: I can classify two-dimensional figures based on the presence or absence of parallel or perpendicular lines.
Focuses On:
- Identifying the lines in two-dimensional shapes
- Using models to classify two-dimensional figures based on parallel and perpendicular lines
- Sorting two-dimensional figures based on parallel and perpendicular lines with and without models
Builds On:
2.8C:
Classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of vertices.
3.6A:
Classify and sort two‐ and three‐dimensional figures, including cones, cylinders, spheres, triangular and rectangular prisms, and cubes, based on attributes using formal geometric language.
Next Level:
5.5A:
Classify two‐dimensional figures in a hierarchy of sets and subsets using graphic organizers based on their attributes and properties.
Read More:
This lesson is designed to support student understanding of the parallel and perpendicular lines in various two-dimensional figures and how to classify figures based on these lines.
The two instructional blocks in this lesson are classify with models and classify by figure names.
In the first instructional block, students identify the parallel and perpendicular lines found in various two-dimensional figures. Students group two-dimensional figures based on the lines they possess.
The second instructional block has students classify figures based on the names of the shapes without models.
Scaffolds such as pictorial representations are built into the lesson to support student understanding.
Grade 4MathTEKS 4.6DClassify 2D Figures Based on Angles
About this lesson
Learning Target: I can classify two-dimensional figures based on the presence or absence of angles of a specified size.
Focuses On:
- Identifying the angles in two-dimensional shapes
- Classifying two-dimensional figures based on the angles, given models
- Sorting two-dimensional figures based on angles with and without models
Builds On:
2.8C:
Classify and sort polygons with 12 or fewer sides according to attributes, including identifying the number of sides and number of vertices.
3.6A:
Classify and sort two‐ and three‐dimensional figures, including cones, cylinders, spheres, triangular and rectangular prisms, and cubes, based on attributes using formal geometric language.
Next Level:
5.5A:
Classify two‐dimensional figures in a hierarchy of sets and subsets using graphic organizers based on their attributes and properties.
Read More:
This lesson is designed to support student understanding of the angles in various two-dimensional figures and how to classify figures based on their angles.
This lesson is designed to support student understanding of angles in various two-dimensional figures and how to classify figures based on these angles.
The two instructional blocks in this lesson are classify with models and classify by figure names.
In the first instructional block, students identify the angles found in various two-dimensional figures. Students group two-dimensional figures based on the angles they possess.
The second instructional block has students classify figures based on the names of the shapes without models.
Scaffolds such as pictorial representations are built into the lesson to support student understanding.
Grade 4MathTEKS 4.6D