1.6.E
The Standard
identify three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes), and triangular prisms, and describe their attributes using formal geometric language
Texas Essential Knowledge and Skills for Mathematics
Teacher's field guide
What This Standard Means
What Students Need to Do
- Students match models, pictures, and everyday objects to the correct solid name. They describe each shape using terms such as flat face, curved surface, edge, vertex, and base.
What Mastery Looks Like
- Students correctly name each solid from a model, picture, or classroom object. They compare solids by describing their flat faces, curved surfaces, edges, vertices, and bases with correct terms.
Common Misconceptions
- Students may call a cylinder a circle or a cone a triangle because they focus on one view. They may not recognize a cube as a rectangular prism or a rotated solid as the same shape. They often mix up faces, edges, and vertices, or count curved surfaces as flat faces.
How to Assess It
- Exit ticket: Label six mixed pictures of solids, then describe two using the words face, edge, vertex, base, or curved surface.
Lesson moves
Ways to Teach It
Give pairs a ball, can, party hat, cereal box, cube, and triangular-prism block to sort using solid-name and attribute cards.
Ask students to explain how a cube is like other rectangular prisms and how it differs, using face, edge, and vertex.
Play Mystery Solid by reading three attribute clues while students choose and justify a solid from a six-shape card set.
Walk around the school to find examples of each solid, then record each name and its visible attributes on a clipboard chart.
Keep exploring
Related Standards
- 2.8.D
compose two-dimensional shapes and three-dimensional solids with given properties or attributes
- K.6.B
identify three-dimensional solids, including cylinders, cones, spheres, and cubes, in the real world
- 1.6.D
identify two-dimensional shapes, including circles, triangles, rectangles, and squares, as special rectangles, rhombuses, and hexagons and describe their attrib...
- 2.8.B
classify and sort three-dimensional solids, including spheres, cones, cylinders, rectangular prisms (including cubes as special rectangular prisms), and triangu...
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