What is Enlarging (Making Bigger)?

S0-SA2-0765

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, all its parts get proportionally larger, so it still looks like the original but just scaled up.

Simple Example

Quick Example

Imagine you have a small photo of your family on your phone. If you 'pinch-out' on the screen, the photo becomes bigger, covering more of the screen. This is enlarging the photo.

Worked Example

Step-by-Step

Let's say you have a drawing of a square with sides of 2 cm each. You want to enlarge it so its sides are now 4 cm each. Here's how:
1. Start with the original square. Each side measures 2 cm.
2. To enlarge it, we need to multiply the length of each side by a factor. Here, to go from 2 cm to 4 cm, the factor is 4 / 2 = 2.
3. So, we multiply each original side length by 2.
4. New side length = 2 cm * 2 = 4 cm.
5. Draw a new square where each side is 4 cm long.
--- The new square is an enlarged version of the original, twice as big on each side.

Why It Matters

Understanding enlargement is crucial in many fields. Architects use it to scale building plans, engineers use it to design machinery, and graphic designers enlarge images for posters. It helps us understand how things change in size while keeping their shape, which is useful in careers from fashion design to space exploration at ISRO.

Common Mistakes

MISTAKE: Only making one part of an object bigger (e.g., making a photo taller but not wider) | CORRECTION: When enlarging, all dimensions (length, width, height) must increase by the same factor to maintain the original shape.

MISTAKE: Adding a fixed amount to the size instead of multiplying by a factor (e.g., adding 2 cm to a 3 cm side to get 5 cm, instead of multiplying) | CORRECTION: Enlargement involves multiplication by a 'scale factor', not addition. If you add, the shape will change.

MISTAKE: Thinking enlargement always means making something 'double' in size | CORRECTION: Enlargement can be by any factor greater than 1 (e.g., 1.5 times, 3 times, 10 times). 'Double' is just one specific type of enlargement.

Practice Questions

Try It Yourself

QUESTION: A small drawing of a star has arms that are 3 cm long. If you enlarge it by a factor of 2, how long will the arms of the new star be? | ANSWER: 6 cm

QUESTION: Your school photo is 4 inches wide and 6 inches tall. If you want to enlarge it so the width becomes 8 inches, what will be the new height? | ANSWER: 12 inches

QUESTION: A map shows a park as a rectangle 5 cm long and 3 cm wide. If the map is enlarged so the park's length becomes 15 cm, what is the scale factor used for enlargement, and what will be the new width of the park on the enlarged map? | ANSWER: Scale factor = 3; New width = 9 cm

MCQ

Quick Quiz

Which of these is an example of enlarging?

Cutting a big cake into smaller pieces

Making a small toy car out of a big block of wood

Zooming in on a picture on your phone to see details

Folding a large sheet of paper to make it fit in an envelope

The Correct Answer Is:

Zooming in on a picture makes it appear larger, which is the definition of enlarging. The other options involve making things smaller or changing their form without increasing size.

Real World Connection

In the Real World

When tailors in India create clothes, they often work with patterns. To make a larger size for an adult from a child's pattern, they 'enlarge' the pattern by a specific scale factor, ensuring all parts of the garment fit proportionally. This is also how digital maps like Google Maps allow you to zoom in to see a smaller area in more detail, making it appear larger on your screen.

Key Vocabulary

Key Terms

ENLARGE: To make something bigger in size | SCALE FACTOR: The number by which all dimensions of an object are multiplied to enlarge or reduce it | PROPORTIONALLY: Keeping the same relative size between different parts of an object | DIMENSION: A measurement of length, width, or height

What's Next

What to Learn Next

Now that you understand enlarging, you can explore 'reducing' (making smaller) which is the opposite. You can also learn about 'scale drawings' and 'maps', where these concepts are used daily to represent real-world objects and distances accurately.