Sure! Here is a simple explanation of faces, vertices, and edges of 3D shapes, along with an oral revision of their properties for grade 1 students.

1. Faces: Faces are the flat surfaces of a 3D shape. They are like the sides of the shape. For example, a cube has six faces, a rectangular prism has six faces, and a cylinder has two faces (one on top and one on the bottom).

2. Vertices: Vertices are the corners of a 3D shape. They are like the points where the edges meet. For example, a cube has eight vertices, a rectangular prism has eight vertices, and a cylinder has zero vertices.

3. Edges: Edges are the lines where two faces of a 3D shape meet. They are like the borders of the shape. For example, a cube has twelve edges, a rectangular prism has twelve edges, and a cylinder has two edges (the curved part on the top and bottom).

Now, let’s do an oral revision of their properties:

1. Can you tell me what faces are? (Answer: Faces are the flat surfaces of a 3D shape.)

2. How many faces does a cube have? (Answer: A cube has six faces.)

3. What are vertices? (Answer: Vertices are the corners of a 3D shape.)

4. How many vertices does a rectangular prism have? (Answer: A rectangular prism has eight vertices.)

5. What are edges? (Answer: Edges are the lines where two faces of a 3D shape meet.)

6. How many edges does a cylinder have? (Answer: A cylinder has two edges.)

7. Can you name a shape that has twelve edges? (Answer: A cube and a rectangular prism both have twelve edges.)

8. Can you name a shape that has zero vertices? (Answer: A cylinder has zero vertices.)

Remember, faces, vertices, and edges are important properties of 3D shapes that help us describe and identify them. Keep practicing and exploring different shapes to become a shape expert!