What is Enlarging?

S0-SA2-0923

Grade Level:

Pre-School – Class 2

All domains without exception

Definition

What is it?

Enlarging means making something bigger in size. When you enlarge an object, its shape stays the same, but all its measurements, like length and width, increase by a certain amount.

Simple Example

Quick Example

Imagine you have a small photo of your family. If you take it to a photo studio and ask them to print a bigger version to put on your wall, they are 'enlarging' the photo. The picture still shows the same people and background, but it's now much larger.

Worked Example

Step-by-Step

Let's say you have a drawing of a square with sides of 2 cm. You want to enlarge it so that each side becomes 3 times bigger.
---1. Original side length of the square = 2 cm.
---2. The enlargement factor (how many times bigger) is 3.
---3. To find the new side length, multiply the original side length by the enlargement factor: New side length = 2 cm * 3.
---4. Calculate the new side length: New side length = 6 cm.
---So, the enlarged square will have sides of 6 cm each.

Why It Matters

Understanding enlarging is key in many fields! Architects use it to draw big buildings on small paper, then enlarge the plans for construction. Graphic designers enlarge logos without making them blurry. Even movie makers enlarge scenes to create special effects, making small models look like huge structures.

Common Mistakes

MISTAKE: Only making one side bigger (e.g., making a photo taller but not wider). | CORRECTION: When enlarging, you must make all parts of the object bigger by the same factor to keep its original shape.

MISTAKE: Thinking enlarging changes the shape of an object. | CORRECTION: Enlarging only changes the size, not the basic shape. A square remains a square, a circle remains a circle.

MISTAKE: Adding a fixed amount to the measurements instead of multiplying. | CORRECTION: Enlarging involves multiplying all dimensions by a 'scale factor', not adding a constant value.

Practice Questions

Try It Yourself

QUESTION: A small rectangular sticker is 4 cm long and 2 cm wide. If you enlarge it by a factor of 2, what will be its new length and width? | ANSWER: New length = 8 cm, New width = 4 cm

QUESTION: Your school playground map is drawn with a scale where 1 cm on the map represents 10 meters in real life. If a cricket pitch is 2 cm long on the map, what is its actual length in meters? | ANSWER: Actual length = 20 meters

QUESTION: A tiny model car is 5 cm long, 2 cm wide, and 1.5 cm tall. If it's enlarged to become a toy car that is 4 times bigger in every dimension, what will be the new length, width, and height of the toy car? | ANSWER: New length = 20 cm, New width = 8 cm, New height = 6 cm

MCQ

Quick Quiz

Which of these is an example of enlarging?

Cutting a pizza into smaller slices

Making a small drawing bigger for a poster

Folding a piece of paper in half

Shrinking a photo to fit on a mobile screen

The Correct Answer Is:

Enlarging means making something bigger. Making a small drawing bigger for a poster directly fits this definition. The other options describe making things smaller or dividing them.

Real World Connection

In the Real World

When you zoom in on a photo or a map on your mobile phone, you are performing an 'enlargement'. Your phone's software is rapidly calculating how to make the image appear bigger on your screen while keeping its proportions correct. This is also how map apps like Google Maps let you see details by zooming in.

Key Vocabulary

Key Terms

ENLARGING: Making something bigger in size | SCALE FACTOR: The number by which all dimensions of an object are multiplied to enlarge or reduce it | PROPORTION: The relationship between the sizes of different parts of an object, which stays the same during enlargement | DIMENSION: A measurement like length, width, or height

What's Next

What to Learn Next

Great job learning about enlarging! Next, you can explore 'Reducing' – which is the opposite of enlarging, making things smaller while keeping their shape. Then, you can learn about 'Scale Drawings' and 'Maps' to see how these ideas are used together in real life.