NC.K.G.3
Identify squares, circles, triangles, rectangles, hexagons, cubes, cones, cylinders, and spheres as two-dimensional or three-dimensional.
Embedded Files
Step 1: Lesson Standards & Learning Goals
In this standard, students differentiate between two-dimensional and three-dimensional shapes for specific shapes that are listed in the standard. This includes sorting two- and three-dimensional shapes into different piles and explaining why specific shapes are in either the two- or three-dimensional category.
Note: Naming the shapes is addressed in standard NC.K.G.2. For this standard in Quarter 1, students differentiate between two-dimensional and three-dimensional shapes using terms such as flat and solid. Teachers should still use the correct name of the shapes as they are teaching. Students are not expected to master shape names in Quarter 1.
Sample Essential Questions
What makes a shape 2-dimensional?
What makes a shape 3-dimensional?
Why are squares, triangles, circles, hexagons and rectangles 2-dimensional shapes?
Why are cubes, cones, cylinders, and cubes 3-dimensional shapes?
How are 2-D and 3-D shapes different? Same?
Vocabulary
Vocabulary
two dimensional
three dimensional
flat
solid
shape
Supporting vocabulary
square
circle
triangle
rectangle
hexagon
cube
cone
cylinder
sphere
Students will be able to...
Students will be able to...
Identify shapes as two-dimensional or three-dimensional.
Sort shapes into two-dimensional or three-dimensional piles.
Explain why specific shapes are in the two-dimensional or three-dimensional category.
Students will know...
Students will know...
Two-dimensional shapes are "flat."
Two-dimensional refers to having length and width.
Three-dimensional shapes are "solid."
Three-dimensional shapes refers to having length, width, and height.
Step 2: Assessment
Tools 4 NC Teachers
Tools 4 NC Teachers
Step 3: Lesson Instructions
Possible Activating Strategies
Possible Activating Strategies
Exploration or Experience
Provide students with a circle and a sphere. Ask them to compare the two figures.
Quick Talk
Provide students with a square and a cube. Ask them to discuss the similarities and differences with a partner.
Read Aloud
Teacher Resources
Teacher Resources
Tools for NC Teachers
Math Expressions - (Barnes and Hearne)
Motivation Math
Think Up! Math
Eureka Math/Engage NY Resources
Embarc Online (Eureka Math)
Zearn Math - Online Support Practice for Eureka Math (Requires free account)
North Carolina Collaborative for Mathematics Learning - Kindergarten Instructional Framework
NCDPI Resources
Kindergarten Math Assessment Practice Prompts
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