Understanding and identifying basic 3D shapes based on their attributes is a first grade, Common Core math skill: 1.GA.1. Below we show two videos that demonstrate this standard. Then, we provide a breakdown of the specific steps in the videos to help you teach your class.
Your students should be familiar with the Kindergarten skill of naming regular shapes (i.e. squares, circles, triangles, etc.) and using formal and informal language to analyze and compare the shapes (K.G.1-3). They should also be familiar with making simple shapes to form larger shapes (K.G.6).
This 1st grade skill of understanding halves and fourths will help your students when they move onto 2nd grade. By understanding halves and fourths, your students will be able to work with, draw, and analyze shapes. Your students will learn to identify more complex shapes: triangles, quadrilaterals, hexagons and cubes (2.G.1).
They will also be able to cut shapes into equal parts and deepen their understanding of “part and whole relationship,” explaining that a whole can be made up of parts (i.e. three thirds, four fourths, etc..) They will also learn that the “equal shares of identical wholes” do not need to the same shape to equal each other (2.G.2-3).
Common Core Standard: 1.GA.1 - Distinguish between defining attributes versus non-defining attributes
Students who understand this principle can:
2 Videos to Help You Teach Common Core Standard: 1.GA.1
Below we provide and breakdown two videos to help you teach your students this standard.
Video 1: Sing About 3D Shapes
This video sings about 3D shapes and discusses their attributes while showing many real life examples, helping students understand those shapes in the world. This video would be a fun and entertaining activity for your students.
The 3D shapes they sing about in the video are spheres, cylinders, pyramids, cubes, and cones.
Below is a list of the shapes and some of the real-world versions and attributes found in the song.
Video 2: Identifying Faces, Edges, and Vertices
The video begins by defining what a 3D shape is: a solid, figure, object, or shape that has three dimensions--length, width, and height. These shapes are classified based on their vertices, edges, and faces.
Next, the video provides exercises for your students to find and identify faces, edges, and vertices on different 3D shapes.
The first example is of a rectangular prism. Boddle counts out the vertices, faces, and edges with your students.
Four additional 3D shapes are shown and students must identify the correct number of faces, edges, and vertices. The shapes are as follows: cube, sphere, square pyramid, and triangular prism.
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