Shapes Around Us C2 Charu - Hobbies PDF Download

Introduction

• Hello kids! Are you ready to learn something interesting today?
• Look around the room you're in right now. Do you see some of these shapes:

3D Objects Around You

What are 3D shapes?

3D shapes are solid shapes that you can hold and touch. They have length, width, and height, which means they aren’t flat like paper but pop out and take up space.

• You see 3D shapes all around you, like balls, boxes, and cans.
• While some shapes are flat like outlines (like a paper, a photograph, etc.), 3D shapes have depth and take up space.

Let us have a closer look at differences between 2D and 3D shapes:

Difference between 2D and 3D shapes

Common shapes around us

Now let's have a look at some of the most common shapes around us:

1. Cuboids

A cuboid looks like a block with 6 flat sides

Examples of cuboids are books, boxes, dice, Rubik's cube.

3D Shapes around us: Cuboids

2. Spheres

A sphere is a 3D shape that is completely round, like a ball. It looks the same from every side and has no flat surfaces

For example, the ball you play with is also a sphere. It can roll in any direction because it is round and has no flat sides. 

3D shapes around us: Spheres

3. Cones

A cone has a pointy tip at the top and a flat circle at the bottom

It has two parts:

1. Pointy Tip: The top of the cone is sharp and comes to a point. It’s like the top of an ice cream cone.

2. Flat Circle: The bottom of the cone is flat and round, like the base of an ice cream cone or the bottom of a party hat.

3D Shapes around us: Cones

4. Cylinders

A cylinder is a 3D shape that looks like a can or a tube. It has two flat circles on the top and bottom, and one curved side that goes all the way around

Examples include your pencils, crayons, batteries, etc.

3D Shapes around us: CylindersFun Activity

Have a look at the following image and answer the questions below 3D shapes around us

Odd one out

1. Can you identify which shape is the odd one out from the shapes below:

Odd one out

 The correct answer is the orange, because it is a sphere. All other shapes in the picture are cones. Odd one out2. Now identify the odd one out with another set of shapes:

Odd one out Out of the shapes above, the first one is a cylinder while the rest are cuboids. Therefore the correct answer is the first one. 

Odd one out

Surfaces, edges and corners

Now kids, let's try another fun activity. Let's decorate a box together. Let's take this gift box and decorate it further using different ornaments:

Understanding surfaces, edges and corners

Faces

Let's start by putting one star on each of the faces of the box. 

Faces of a 3D shape

Note that only half of the faces of the box are visible to us here. How many stars can you put on this box?

Edges

Next, let's put a ribbon on each edge of the box like this: 

Edges of a 3D shape

Notice that only the top edges are visible to us. How many edges are there at the bottom of the box? How many edges does the box have in total? The answer is 6 that are visible to us and 6 that are hidden from us = 12 edges. 

Corners

Corners of a 3D shape

Shape Safari

Now, let's look at the objects in the table and find out how many faces, edges and corners each of them has:

 Faces, Edges and Corners of 3D shapes