**Materials:** one rectangular prism, cube, sphere, cone, cylinder, and also pyramid for each group of students

**Preparation:** distribute solid figures to teams of students.

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**Prerequisite an abilities and Background:** college student should have the ability to recognize and also name solid figures.

**Ask:**

*Which solid numbers have deals with that are polygons?*(rectangular prism, cube, and pyramid)

**Say:**

*Put the various other solid numbers aside because that now.*

**Ask:**

*Which solid number has encounters that are rectangles?*(rectangular prism)

**Say:**

*Count the number of faces a rectangular prism has. Mark an X on each confront as friend count.*Copy this table on the board as students space working.

Solid Figure

Number the Faces

Number that Edges

Number of Vertices

Solid figure Rectangular Prism |

**Ask:**

*How numerous faces does a rectangular prism have?*(6) document 6 top top the table.

**Say:**

*The heat segment whereby two faces meet is one edge. Counting the variety of edges a rectangle-shaped prism has.*Mark one X on each edge as you count.

**Ask:**

*How many edges go a rectangular prism have?*(12) document 12 top top the table.

**Say:**

*The allude where edges satisfy is a vertex. Counting the number of vertices a rectangular prism has.*Mark one X on each vertex together you count.

**Ask:**

*How countless vertices go a rectangular prism have?*(8) document 8 ~ above the table.Have students find the number of faces, edges, and also vertices of a cube and a pyramid. Record the answers in the table.

Solid Figure

Number the Faces

Number that Edges

Number the Vertices

Solid number Rectangular Prism | number of Faces 6 | number of Edges 12 | number of Vertices 8 |

Solid number Cube | variety of Faces 6 | number of Edges 12 | variety of Vertices 8 |

Solid figure Pyramid | variety of Faces 5 | number of Edges 8 | variety of Vertices 5 |

**Ask:**

*Why perform you think that a rectangular prism and a cube have actually the same number of faces, edges, and vertices?*Lead students come realize the the deals with of a rectangle-shaped prism and also a cube are all rectangles, but in the instance of the cube, the rectangles are squares. A cube is a special rectangular prism.

**Say:**

*Take the end your solid numbers that have curved surfaces. Look at the sphere.*

**Ask:**

*Does a round have any kind of edges or vertices?*(no)

*Why not?*Students have to realize that a sphere has no faces, so that can"t have any kind of edges or vertices.

**Say:**

*Look at the cone.*

**Ask:**

*Does a cone have any edges?*(no)

*Why not?*Students should realize the a cone has only one face, and you need much more than one confront to kind an edge.

**Ask:**

*Does a cone have any kind of vertices?*Lead student to view that a cone has actually no edges, yet the suggest where the surface of the cone ends is called the vertex of the cone.

**Say:**

*Look at the cylinder.*

**Ask:**

*Does a cylinder have any edges or vertices?*(no)

*Why not?*Students must realize that although a cylinder has two faces, the encounters don"t meet, so there space no edge or vertices.

**Wrap-Up and Assessment Hints**Encourage students come explore much more attributes of continual solid figures. Ask questions such as the following: *Which solid numbers have opposite faces that space parallel?* (rectangular prism, cube, cylinder) *Which solid figures have opposite deals with that room congruent?* (rectangular prism, cube, cylinder, pyramid) *Which solid number has every congruent faces?* (cube) v questioning methods such as these, girlfriend will have the ability to judge her students" expertise of hard figures.

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*Grow student confidence in math with *HMH right into Math*, ours core systems for mathematics instruction and also a vision because that student development for grades K–8.*