2.MATH.8.B

Classify and sort three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes as special rectangular prisms), and triangular prisms, based on attributes using formal geometric language.

Grade 2 · Texas Essential Knowledge and Skills (TEKS) · TEKS 2012

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Vocabulary
three-dimensional solidsspheresconescylindersrectangular prismscubestriangular prismsattributesformal geometric language
Skills
  • classify (three-dimensional solids by attributes) #dok2
  • sort (three-dimensional solids using formal geometric language) #dok2
  • identify (attributes of spheres, cones, cylinders, rectangular prisms, cubes, and triangular prisms) #dok1
  • use (formal geometric language to describe 3D shapes) #dok2
Learning Targets
  • I can identify attributes of spheres, cones, cylinders, rectangular prisms, cubes, and triangular prisms. #dok1
  • I can recognize and name three-dimensional solids using their geometric properties. #dok1
  • I can classify three-dimensional solids based on their attributes, such as faces, edges, and vertices. #dok2
  • I can sort three-dimensional solids into groups using formal geometric language. #dok2
  • I can use formal geometric vocabulary to explain the differences between various three-dimensional solids. #dok2
  • I can justify how I sorted and classified three-dimensional solids by describing their attributes. #dok3
Big Ideas
  • Three-dimensional solids have unique attributes that help us identify, classify, and sort them.
  • Using formal geometric language to describe solids helps communicate mathematical ideas more clearly.
Essential Questions
  • What attributes can we use to classify and sort different three-dimensional solids?
  • How does using geometric language help us describe three-dimensional solids more precisely?
  • What are the similarities and differences among spheres, cones, cylinders, rectangular prisms, cubes, and triangular prisms?
  • Why is it important to use formal geometric vocabulary when describing solids?
  • How does sorting solids into groups help us understand their properties?