Big Ideas Math Book Answers has created a sequence of lessons in all the chapters. Get Big Ideas Math Answers Grade K Chapter 12 Identify Three-Dimensional Shapes on this. This pdf link will make understanding concepts of 3-Dimensional shapes so easy. The 3-D shapes are cone, cylinder, cube, cuboid, etc. So following the Big Ideas Math Answers Grade K Chapter 12 Identify Three-Dimensional Shapes is necessary to get notified of the topics. So it will be easy for you to understand the concepts behind each and every lesson.

## Big Ideas Math Book Grade K Answer Key Chapter 12 Identify Three-Dimensional Shapes

The topics covered in this chapter are Vocabulary, Two- and Three-Dimensional Shapes, Cubes and Spheres etc. So, Download Big Ideas Math Answers Grade K Chapter 12 Identify Three-Dimensional Shapes PDF for free. For more practice questions simply go to the performance task and cumulative practice which is given at the end of the chapter. Just click on the below-attached links and start your preparation from now.

**Vocabulary**

**Lesson: 1 Two- and Three-Dimensional Shapes**

- Lesson 12.1 Two- and Three-Dimensional Shapes
- Two- and Three-Dimensional Shapes Homework & Practice 12.1

**Lesson: 2 Describe Three-Dimensional Shapes**

- Lesson 12.2 Describe Three-Dimensional Shapes
- Describe Three-Dimensional Shapes Homework & Practice 12.2

**Lesson: 3 Cubes and Spheres**

**Lesson: 4 Cones and Cylinders**

**Lesson: 5 Build Three-Dimensional Shapes**

**Lesson: 6 Positions of Solid Shapes**

**Chapter 12: Identify Three-Dimensional Shapes**

- Identify Three-Dimensional Shapes Performance Task
- Identify Three-Dimensional Shapes Activity
- Identify Three-Dimensional Shapes Chapter Practice

### Identify Three-Dimensional Shapes Vocabulary

**Directions:**

Circle each can. Draw a square around each box. Count and write how many of each two-dimensional shape you draw.

Answer:

Answer:

Answer:

Answer:

### Lesson 12.1 Two- and Three-Dimensional Shapes

**Explore and Grow**

**Directions:**

Circle any triangles, rectangles, squares, hexagons, and circles you see in the picture. Use another color to circle any objects in the picture that match the blue shapes shown. Tell what you notice about each shape.

Answer:

**two-dimensional**

rectangle

circle

triangle

hexagon

Total11 shapes

**three-dimensional**

cylinder

sphere

cube

cone

Total 8 shapes

Explanation:

A two-dimensional shape is a shape that has length and width but no depth. … A circle is one example of a two-dimensional shape. Example Two. A rectangle is another example of a two-dimensional shape.

Triangles, Rectangles, Squares, Hexagons, and Circles all these shapes are all 2-D shapes.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width, and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

All the objects in the picture represent the 3-D shapes so, they are circled with a different color.

**Think and Grow**

**Directions:**

Circle any three-dimensional shapes. Draw rectangles around any two-dimensional shapes. Tell why your answers are correct.

Answer:

**two-dimensional**

rectangle

circle

**three-dimensional**

cylinder

sphere

cuboid

cone

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

**Apply and Grow: Practice**

**Directions:**

**1 – 4** Circle any three-dimensional shapes. Draw rectangles around any two-dimensional shapes. Tell why your answers are correct.

Question 1.

Answer:

**two-dimensional**

rectangle

circle

**three-dimensional**

cylinder

cube

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangles.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 2.

Answer:

**two-dimensional**

circle

square

hexagon

**three-dimensional**

sphere

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 3.

Answer:

**two-dimensional**

Triangle

**three-dimensional**

Cuboid

Triangle prism

Cone

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 4.

Answer:

**two-dimensional**

0

**three-dimensional**

Cylinder

Sphere

Cone

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

**Think and Grow: Modeling Real Life**

**Directions:**

Circle any shapes in the picture that are solids. Draw rectangles around any shapes in the picture that are flats. Count and write how many solids and flats you find.

three-Dimensional

________

– – – – – – – –

________

two-dimensional

________

– – – – – – – –

________

Answer:

**two-dimensional**

Rectangles

Total 7 flat surfaces

**three-dimensional**

Cubes

Sphere

Cone

Cylinder

Total 8 solids

Explanation:

Solid figures are three-dimensional. A face is a flat surface of a solid.

### Two- and Three-Dimensional Shapes Homework & Practice 12.1

**Directions:**

**1 – 3** Circle any three-dimensional shapes. Draw rectangles around any two-dimensional shapes. Tell why your answers are correct.

Question 1.

Answer:

**two-dimensional**

Triangle

Square

**three-dimensional**

Cylinder

Sphere

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 2.

Answer:

**two-dimensional**

Hexagon

Circle

**three-dimensional**

Cube

Cone

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 3.

Answer:

**two-dimensional**

Rectangle

Square

**three-dimensional**

Cube

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

**Directions:**

**4** and **5** Circle any three-dimensional shapes. Draw rectangles around any two-dimensional shapes. Tell why your answers are correct. **6** Circle any three-dimensional shapes in the picture. Count and write the number. Draw rectangles around any two-dimensional shapes in the picture. Count and write the number.

Question 4.

Answer:

**two-dimensional**

Circle

**three-dimensional**

Cylinder

Sphere

Cone

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 5.

Answer:

**two-dimensional**

Rectangle

Circle

Triangle

**three-dimensional**

Cube

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 6.

Answer:

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

### Lesson 12.2 Describe Three-Dimensional Shapes

**Explore and Grow**

**Directions:**

Cut out the Roll, Stack, Slide Sort Cards. Sort the cards into the categories shown.

rolls

stacks

slides

Answer:

**Think and Grow**

**Directions:**

- Look at the solid shape on the left that rolls. Circle the other solid shapes that roll.
- Look at the solid shapes on the left that stack. Circle the other solid shapes that stack.
- Look at the solid shape on the left that slides. Circle the other solid shapes that slide.

Answer:

Explanation:

Solid shapes that can roll are circled with Brown.

Solid shapes that can slide are circled with Yellow.

Solid shapes that can stack are circled with Blue.

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Shapes with a curved face can roll. Example sphere , cylinder , cone shape.

**Apply and Grow: Practice**

**Directions:**

**1** Look at the solid shape on the left that rolls. Circle the other solid shapes that roll. **2** Circle the solid shapes that roll and slide. **3** Circle the solid shapes that stack and slide. **4** Circle the solid shape that does not stack or slide.

Question 1.

Answer:

Given:

The cylinder can roll,roll and slide, stack and slide

The cube can slide and stack.

The sphere can only roll.

Explanation:

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Shapes with a curved face can roll. Example sphere, cylinder, cone shape.

Question 2.

Answer:

Given:

The cylinder can roll, stack and slide, roll and slide

Cone can roll, roll and slide.

The cube can slide and stack.

Explanation:

Solid shapes that can roll are circled with Brown.

Solid shapes that can slide are circled with Yellow.

Solid shapes that can stack are circled with Blue.

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Shapes with a curved face can roll. Example sphere, cylinder, cone shape.

Question 3.

Answer:

Given:

A ball that represents a Sphere. The ball can only roll.

A wooden log which represent cylinder. Log can roll, roll and slide, stack and slide.

The wooden box which represents cube. The box can slide and stack.

Hat represent cone. hat can roll, roll and slide.

Explanation:

Solid shapes that can roll are circled with Brown.

Solid shapes that can slide are circled with Yellow.

Solid shapes that can stack are circled with Blue.

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Shapes with a curved face can roll. Example sphere, cylinder, cone shape.

Question 4.

Answer:

Given:

The ball which represents Sphere. The ball can only roll.

Glue stick which represents cylinder. Glue stick can roll,roll and slide, stack and slide.

The box which represents cube. Box can slide and stack.

Birthday Hat represents cone. Birthday hat can roll, roll and slide.

Explanation:

Solid shapes that can roll are circled with Brown.

Solid shapes that can slide are circled with Yellow.

Solid shapes that can stack are circled with Blue.

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Shapes with a curved face can roll. Example sphere, cylinder, cone shape.

**Think and Grow: Modeling Real Life**

**Directions:**

You stack the 3 objects shown. Write 1 below the object you place at the bottom of the stack, write 2 below the object you stack next, and write 3 below the object you stack last. Tell why you chose this order.

Answer:

Given:

cylinder shaped Oats box and piggy bank. Oats box and piggy bank can roll, roll and slide, stack and slide.

cube shaped Cardboard box and a Wooden box . A cardboard box and a Wooden Box can slide and stack.

cone shaped Party hats. Party hats can roll, roll and slide.

Explanation:

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Shapes with a curved face can roll. Example sphere , cylinder , cone shape.

### Describe Three-Dimensional Shapes Homework & Practice 12.2

**Directions:**

**1** Look at the solid shapes on the left that stack. Circle the other solid shapes that stack. **2** Look at the solid shape on the left that rolls. Circle the other solid shapes that roll. **3** Look at the solid shape on the left that slides. Circle the other solid shapes that slide.

Question 1.

Answer:

Explanation:

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Question 2.

Answer:

Explanation:

Shapes with a curved face can roll. Example sphere, cylinder, cone shape.

Question 3.

Answer:

Explanation:

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

**Directions:**

**4** Circle the solid shapes that roll and stack. **5** Circle the solid shapes that stack and slide. **6** Circle the solid shape that does not roll. **7** You stack the 3 objects shown. Write 1 below the object you place at the bottom of the stack, write 2 below the object you stack next, and write 3 below the object you stack last. Tell why you chose this order.

Question 4.

Answer:

Cylinder shaped objects can roll and slide.

Explanation:

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Shapes with a curved face can roll. Example sphere, cylinder, cone shape.

Question 5.

Answer:

Given:

Cube shaped objects can slide and stake.

Cylinder shaped objects can roll and slide.

Explanation:

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Question 6.

Answer:

Given:

Cube shaped objects can slide and stake. Cube shaped solids that does not roll.

Explanation:

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

Question 7.

Answer:

Explanation:

In the figure given we have 2 cylinder shaped objects and 1 cone shaped object.

Cylinders can stack, slide and roll. So, I used both the cylinder shaped objects at the bottom.

Cone can roll and slide. As cones shaped figures can not be stacked I used at the top.

### Lesson 12.3 Cubes and Spheres

**Explore and Grow**

**Directions:**

Cut out the Cube and Sphere Sort Cards. Sort the cards into the categories shown.

Answer:

**Think and Grow**

**Directions:**

Circle the cube. Draw a rectangle around the sphere. Tell why your answers are correct.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

**Apply and Grow: Practice**

**Directions:**

**1** Circle the cube. Draw a rectangle around the sphere. Tell why your answers are correct. **2 – 4** Circle any object that looks like a cube. Draw a rectangle around any object that looks like a sphere. Tell why your answers are correct.

Question 1.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

Question 2.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

Question 3.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

Question 4.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

**Think and Grow: Modeling Real Life**

**Directions:**

Use Make a Cube to build your own number cube. Draw the shape of the flat surfaces of your cube. Count and write the number of flat surfaces.

________

– – – – – – – –

________ flat surfaces

Answer:

### Cubes and Spheres Homework & Practice 12.3

**Directions:**

**1 – 3** Circle the cube. Draw a rectangle around the sphere. Tell why your answers are correct.

Question 1.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges

Question 2.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges

Question 3.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges

**Directions:**

**4 – 6** Circle any object that looks like a cube. Draw a rectangle around any object that looks like a sphere. Tell why your answers are correct. **7** Draw the shape of the flat surfaces of a die. Count and write the number of flat surfaces.

Question 4.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges

Question 5.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges

Question 6.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

Question 7.

Answer:

Explanation:

Dice is similar to a cube.

A cube is a region of space formed by six identical square faces joined along their edges.

### Lesson 12.4 Cones and Cylinders

**Explore and Grow**

**Directions:**

Cut out the Cone and Cylinder Sort Cards. Sort the cards into the categories shown.

Answer:

**Think and Grow**

**Directions:**

Circle the cone. Draw a rectangle around the cylinder. Tell why your answers are correct.

Answer:

Explanation:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

A Cylinder is a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance.

**Apply and Grow: Practice**

**Directions:**

**1** Circle the cone. Draw a rectangle around the cylinder. Tell why your answers are correct. **2 – 4** Circle any object that looks like a cone. Draw a rectangle around any object that looks like a cylinder. Tell why your answers are correct.

Question 1.

Answer:

Explanation:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

A Cylinder is a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance.

Question 2.

Answer:

Explanation:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

A Cylinder is a three-dimensional solid that holds two parallel bases joined by a curved surface, at a fixed distance.

Question 3.

Answer:

Explanation:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

Question 4.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

**Think and Grow: Modeling Real Life**

**Directions:**

Use Make a Cylinder to build a can of vegetables. Draw the shape of the flat surfaces of your can. Count and write the number of flat surfaces.

__________

– – – – – – – – – –

__________ flat surfaces

Answer:

### Cones and Cylinders Homework & Practice 12.4

**Directions:**

**1 – 3** Circle the cone. Draw a rectangle around the cylinder. Tell why your answers are correct.

Question 1.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

Question 2.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

Question 3.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

**Directions:**

**4 – 6** Circle any object that looks like a cone. Draw a rectangle around any object that looks like a cylinder. Tell why your answers are correct. **7** Draw the shape of the flat surface of a cone. Count and write the number of ﬂat surfaces.

Question 4.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

Question 5.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

Question 6.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

Question 7.

Answer:

Explanation:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

### Lesson 12.5 Build Three-Dimensional Shapes

**Explore and Grow**

**Directions:**

Use your materials to build one of the three-dimensional shapes shown. Circle the three-dimensional shape that you build.

Answer:

**Think and Grow**

**Directions:**

- Use your materials to build the 2 shapes shown.
- Connect the 2 shapes that you build, as shown.
- Tell what solid shape you build.

Answer:

Cube

**Apply and Grow: Practice**

**Directions:**

**1 – 3** Use your materials to build the solid shape shown. **4** Use your materials to build a solid shape that has 6 square, ﬂat surfaces. Circle the shape you build.

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Question 4.

Answer:

**Think and Grow: Modeling Real Life**

**Directions:**

- Use your materials to build the castle tower in the picture.
- Circle the solid shapes that you use to build the tower.

Answer:

Explanation

The above figure represent a cylinder base with cone on the top.

### Build Three-Dimensional Shapes Homework & Practice 12.5

**Directions:**

**1** and **2** Use your materials to build the solid shape shown. **3** Use your materials to build the solid shape that has a curved surface and only 1 flat surface. Circle the shape you build. **4** Use your materials to build a solid shape that has no flat surfaces. Circle the shape you build.

Question 1.

Answer:

Question 2.

Answer:

Question 3.

Answer:

Question 4.

Answer:

**Directions:**

**5** Use your materials to build the totem pole in the picture. Circle the solid shapes that you use to make the totem pole.

Question 5.

Answer:

Explanation:

The above totem is a stack of three shapes. The bottom is in the shape of a Cube. The middle is in the shape of a Cylinder. The top is in the shape of a Cone.

### Lesson 12.6 Positions of Solid Shapes

**Explore and Grow**

**Directions:**

Place a counter beside the bench. Place a counter in front of the tree. Place a counter next to below the stairs. Place a counter the baby swing.

Answer:

**Think and Grow**

**Directions:**

- Circle the object that looks like a cylinder that is next to the table. Draw a line through the object that looks like a cone that is below the shelf. Draw a rectangle around the object that looks like a sphere that is above the table.
- Circle the object that looks like a cube that is behind the shovel. Draw a line through the object that looks like a cylinder that is beside the tree. Draw a rectangle around the object that looks like a sphere that is in front of the tree.

Answer:

**Apply and Grow: Practice**

**Directions:**

**1** Circle the object that looks like a cylinder that is behind a paper cup. Draw a line through the object that looks like a sphere that is above the napkin dispenser. Draw a rectangle around the object that looks like a cone that is below a glass cup. **2** Circle the object that looks like a cone that is beside the log. Draw a line through the object that looks like a sphere that is above the log. Draw a rectangle around the object that looks like a cone that is in front of the log.

Question 1.

Answer:

Question 2.

Answer:

**Think and Grow: Modeling Real Life**

**Directions:** Use the City Scene Cards to place the objects on the picture.

- Place a dog in front of the boy crossing the street.
- Place a tree beside the building that looks like a cube.
- Place an object that looks like a sphere above the buildings. Place that object behind a cloud.
- Place an object that looks like a cone below the traffic light.
- Place a streetlight next to the girl on the sidewalk.

Answer:

### Positions of Solid Shapes Homework & Practice 12.6

**Directions:**

**1** Circle the object that looks like a sphere that is beside the pool. Draw a line through the object that looks like a cone that is next to the ball. Draw a rectangle around the object that looks like a cylinder that is behind the block.

Question 1.

Answer:

**Directions:**

**2** Circle the object that looks like a cone that is above the stuffed animal. Draw a line through the object that looks like a cylinder that is in front of the stuffed animal. Draw a rectangle around the object that looks like a cube that is below the stuffed animal. **3** Use the Construction Scene Cards to place the objects on the picture. Place a building below the object that is shaped like a cube. Place a tree beside that building. Place a blimp the traffic cone. Place a truck in front of the traffic cone.

Question 2.

Answer:

Question 3.

Answer:

### Identify Three-Dimensional Shapes Performance Task

Directions: 1 You pick up trash in the park. Draw lines to match each item with its correct recycling bin.

- The object that rolls but does not stack that is in front of the lamppost goes in the yellow bin.
- The object below the bench that does not roll goes in the blue bin.
- The object that has 1 flat surface that is behind an object that looks like a cylinder goes in the green bin.
- The object that stacks, slides, and rolls that are above an object that looks like a cube goes in the orange bin.
- The object in front of the tree that rolls and has 2 flat surfaces goes in the green bin.
- The object next to the tree that stacks and slides and has only flat surfaces goes in the green bin.
- The object that has a curved surface that does not stack that is beside the tree goes in the blue bin.
- The object that slides and rolls that is next to an object that has 6 flat surfaces goes in the blue bin.

Question 1.

Answer:

### Identify Three-Dimensional Shapes Activity

**Solid Shapes: Spin and Cover**

**Directions:**

Take turns using the spinner to find which type of three-dimensional shape to cover. Use a counter to cover an object on the page. Repeat this process until you have covered all of the objects.

Answer:

### Identify Three-Dimensional Shapes Chapter Practice

**Directions:**

**1** and **2** Circle any three-dimensional shapes. Draw rectangles around any two-dimensional shapes. Tell why your answers are correct. **3** Look at the solid shape on the left that rolls. Circle the other solid shapes that roll. **4** Circle the solid shapes that stack and slide.

**12.1 Two- and Three-Dimensional Shapes**

Question 1.

Answer:

**two-dimensional**

rectangle

circle

**three-dimensional**

Sphere

cube

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

Question 2.

Answer:

**two-dimensional**

Triangle

**three-dimensional**

Cylinder

Cone

Explanation:

A two-dimensional shape is a shape that has length and width but no depth.

Examples: Circle, Triangle, Rectangle, Squares, Hexagons.

2-D shapes have been shaped with rectangle.

A three-dimensional shape can be defined as a solid figure or an object or shape that has three dimensions – length, width and height. Unlike two-dimensional shapes, three-dimensional shapes have thickness or depth.

Examples: Sphere, Torus, Cylinder, Cone, Cube, Cuboid, Triangular Pyramid, Square Pyramid.

3-D shapes have been shaped with circle.

**12.2 Describe Three-Dimensional Shapes**

Question 3.

Answer:

Explanation:

Shapes with a curved face can roll. Example sphere , cylinder , cone shape

Question 4.

Answer:

Explanation:

The object which has a flat surface can slide. Example Rectangle, cube, cuboid, cylinder shapes.

Shapes with a flat face can stack. Example Cube, Rectangle, Cylinder shape.

**Directions:**

**5** Circle the cube. Draw a rectangle around the sphere. Tell why your answers are correct. **6** Circle any object that looks like a cube. Draw a rectangle around any object that looks like a sphere. Tell why your answers are correct. **7** and **8** Circle any object that looks like a cone. Draw a rectangle around any object that looks like a cylinder. Tell why your answers are correct.

**12.3 Cubes and Spheres**

Question 5.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

Question 6.

Answer:

Explanation:

A sphere is a round, ball-shaped solid. It has one continuous surface with no edges or vertices.

A cube is a region of space formed by six identical square faces joined along their edges.

**12.4 Cones and Cylinders**

Question 7.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

Question 8.

Answer:

A Cone is a distinctive three-dimensional geometric figure that has a flat surface and a curved surface, pointed towards the top. The pointed end of the cone is called the apex, whereas the flat surface is called the base.

**Directions:**

**9** Use your materials to build the solid shape shown. **10** Use your materials to build a shape that has a curved surface and 2 flat surfaces. Circle the shape you build. **11** Use your materials to build the elf in the picture. Circle the solid shapes that you use to make the elf.

**12.5 Build Three-Dimensional Shapes**

Question 9.

Question 10.

Answer 9 – 10 :

Question 11.

Answer:

**Directions:**

**12** Circle the object that looks like a cylinder that is below the hat. Draw a line through the object that looks like a cone that is beside the cooler. Draw a rectangle around the object that looks like a cylinder that is in front of the hat. **13** Circle the object that looks like a sphere that is above the cone. Draw a line through the object that looks like a cylinder that is next to the cone. Draw a rectangle around the object that looks like a sphere that is behind the cone.

Question 12.

Answer:

Question 13.

Answer:

*Final Words:*

You can learn the difference between 2-D and 3-D shapes from here. Write your new ideas on your book and solve the problems in own way. Also create questions on your own and try to understand the concepts in depth. We hope the given info is helpful for all the students of Grade K. If you have any doubts regarding the concept you can post the comments in the below-mentioned comment box. Hope this Big Ideas Math Grade K Solution Key helps you to score good marks in the exams.