**vertices**or

**edges**. The is designed for students in qualities K–1 but can be prolonged or streamlined to change for your students’ readiness.

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**Objective:**In this lesson, student will discover the parts that make up solid figures.

## Lesson: Identify and also Analyze hard Figures

**Materials:** One rectangle-shaped prism, cube, sphere, cone, cylinder, and pyramid because that each group of students.

**Preparation:** distribute solid numbers to groups of students.

**Prerequisite skills and Background:** college student should have the ability to recognize and name hard figures.

**Say:**

*A*Show college student the idea by holding increase a solid object such together a rectangular prism and asking if anyone have the right to identify a confront of the object.

**face**is a flat surface that a heavy object.**Say:**

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

**Ask:**

*Which solid number has faces that space rectangles?*(rectangular prism)

**Say:**

*Count the variety of faces a rectangle-shaped prism has. Note each confront as girlfriend count.*To note the deals with temporarily, use stickers or sticky notes.

*Copy the table below as students room working so that all students can see it.*

**Teacher Tips:**

**Ask:**

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

**Say:**

*The line segment where two encounters meet is an*Hold increase a hard figure and also show students an example of an edge.

**edge**.*count the variety of edges a rectangular prism has.*Mark each edge together you count. Comparable to faces, usage a marker, stickers, or sticky notes.

**Ask:**

*How many edges walk a rectangular prism have?*(12) record 12 on the table.

**Say:**

*The allude where edges accomplish is a*Mark every vertex together you count.

**vertex**. Count the number of vertices a rectangular prism has.**Ask:**

*How many vertices go a rectangle-shaped prism have?*(8) document 8 on the table.Have students uncover the variety of faces, edges, and vertices that a cube and also a pyramid. Record the answers in the table.

**Teacher Tip:** for students not yet all set for the math vocabulary provided here, you can use *side* rather of *edge *and *corn**er* rather of *vertex*.

**Ask:**

*Why carry out you think the a rectangular prism and also a cube have the same number of faces, edges, and vertices?*Lead students to realize the the faces of a rectangular prism and a cube space all rectangles, however in the case of the cube, the rectangles are squares. A cube is a special kind of rectangular prism.

## Faces, Edges, and Vertices for curved Surfaces

**Say:**

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

**Ask:**

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

*Why not?*This is not a straightforward question and requires reasoning critically around what an leaf or crest is. For example, numerous real-world objects the we speak to spheres, such as soccer balls, space in fact facility solid forms with plenty of edges and also vertices. Consider using think-pair-share, whereby students individually think with their reasoning, share it with a partner, and also then girlfriend facilitate a discussion roughly how a sphere has actually no faces, so it can not have any edges, and also because it has actually no edges, it can’t have any vertices.

**Say:**

*Look in ~ the cone.*

**Ask:**

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

*Why not?*Again, consider using think-pair-share. Protect against telling students that they are appropriate or wrong. Instead, command them to see that a cone only has actually one face, and you need more than one challenge to kind an edge.

**Ask:**

*Does a cone have any vertices?*Lead student to watch that a cone has actually no edges (at least no

*straight*ones!), however the point where the surface of the cone ends is referred to as the crest of the cone.

**Say:**

*Look in ~ the cylinder.*

**Ask:**

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

*Why not?*Although a cylinder has two faces, the faces don’t meet, therefore there space no edges or vertices.

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## Wrap-Up and Assessment Hints

To assess students’ understanding, you can introduce a new solid shape, such as a triangular prism, and also have students fill out one more row of the chart.

To explore much more attributes of continuous solid figures, ask questions such as the following:

*Which solid figures have opposite faces that space parallel?*(rectangular prism, cube, cylinder)

*Which solid numbers have opposite faces that space congruent?*(rectangular prism, cube, cylinder, pyramid)

*Which solid number has every congruent faces?*(cube)

Through questioning methods such as these, girlfriend will have the ability to judge your students’ understanding of hard figures. Because that students who space ready, you can ask questions that stretch into higher grade standards and also promote a deeper knowledge of solid figures:

*What would the cross-section the a solid watch like? how would it readjust depending on what angle you use?*

*How can you figure out just how much liquid it would take to fill increase the shape?*

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*Looking for more complimentary kindergarten and very first grade math lessons and also activities? examine out our ever-growing library below on *Shaped*!*