1st Period | Sound Generation_ Let's make a sound?

How does the voice sound? ··· 13
How do other sounds come out? ··· 15
What if the vibration spreads? ··· 19
How can sound be transmitted? ··· 24
Spiral Love's Organizing Notes... 26
Find the Science Quiz Master! ··· 27
Mr. Yong's Science Cafe... 28
- How do insects make sounds?

2nd Period | Pitch of Sound_ What is the difference between high and low sounds?

Can you see sound with your eyes? ··· 33
What determines the pitch of a sound? ··· 37
Are there sounds that humans can't hear? ··· 41
Na Seon-ae's Organizing Notes... 44
Find the Science Quiz Master! ··· 45
Mr. Yong's Science Cafe... 46
- Is this happening because of the vibration frequency?

3rd Period | Sound Level_Why are sounds loud and soft?

Let's make loud and quiet sounds... 51
What's the difference between loud and soft sounds? ··· 54
Representing the loudness of a sound in numbers... 56
Same frequency and amplitude, but different sounds... 60
Na Seon-ae's Organizing Notes... 64
Find the Science Quiz Master! ··· 65

4th Period | Principles of Musical Instruments_ How to make high and low sounds with an instrument?

Where high and low sounds are heard... 69
How to produce a variety of sounds with four strings? ··· 73
You can tell just by looking at the size? ··· 76
Na Seon-ae's Organizing Notes... 82
Find the Science Quiz Master! ··· 83
Mr. Yong's Science Cafe... 84
- Why do siren sounds different?

5th Period | Sound Transmission_ Can you hear sound through the walls?

What transmits sound from upstairs? ··· 89
What if there was no air? ··· 93
Another way to reduce noise? ··· 96
Na Seon-ae's Organizing Notes... 98
Find the Science Quiz Master! ··· 99

6th Period | Sound Reflection_ How does an echo occur?

What if sound hits a wall? ··· 102
Spreading and gathering sound... 107
You're saying you can figure out distance by reflection? ··· 110
Na Seon-ae's Organizing Notes... 114
Find the Science Quiz Master! ··· 115
Mr. Yong's Science Cafe... 116
- Even small sounds can be heard loudly?

Crossword Quiz... 118
Into the Textbook... 120
Search ··· 122
Quiz Answers... 123

If you read it with interest and enjoyment, you will soon find that scientific knowledge has entered your head!

Considering the reading level of today's children, who are familiar with visual media but lack basic reading comprehension skills, the content was delivered in the easiest language possible at the children's eye level.
The friendly narrative style, consisting of dialogue between characters, makes it easy for children who are not accustomed to reading text.
We've also optimized the structure to make it easy to read and understand accurately by utilizing various visual aids.

Satisfy your curiosity in real life and develop your scientific thinking skills!

It provides a framework for viewing not only simple scientific concepts but also phenomena and problems through a scientific lens.
This book, which draws scientific curiosity from real-life materials and approaches concepts and principles, resonates with children and naturally draws them into the book.
Readers can not only satisfy their scientific curiosity and gain knowledge, but also develop scientific thinking and attitudes.

A colorful visual composition that catches the eye!

It delivers content intuitively through a variety of visual aids, including vivid and realistic photos, clear illustrations, and humorous characters.
Additionally, we've designed the book to reduce the burden of learning and make science an enjoyable subject by summarizing the key content of each unit through 4-panel cartoons.

A new standard for elementary science based on the latest science textbooks from 2019!

It faithfully reflects the contents of the most recently revised elementary and middle school textbooks.
Each volume, organized by topic, covers elementary school subjects as well as concepts learned in middle school, tailored to the elementary school level.
Additionally, we have further enhanced the curriculum connectivity by reflecting the scientific terminology used in the revised textbooks.

A book painstakingly developed by trusted science education experts!

This book was painstakingly created by science education experts who have long studied science at universities and taught children directly in the field, participating in the entire development process from planning to editing.
To convey accurate scientific concepts at an elementary school level, we studied elementary, middle, and high school textbooks as well as various domestic and international expert materials to develop fresh materials and explanation methods that are suitable for children's level.
Additionally, the series' reliability has been enhanced by repeatedly ensuring the accuracy of its content through review by authoritative professors who teach science at education universities.

『Mr. Yong's Bustling Science Classroom』 Volume 6
A world of diverse sounds you've never heard of before unfolds before you!

From music blaring from the radio to the noise of the road, we are constantly surrounded by sound.
But even sounds that we thought were familiar can feel very unfamiliar when viewed through the eyes of science.

In the "Sound" section, we explore the world of sound, from the sounds we can hear around us to the sounds we cannot hear.
Learn the concept of frequency through the vibration of a tuning fork, and learn the concepts of amplitude and frequency by observing the waveform of instruments such as the violin or cello on a graph.
You will also learn how dolphins and bats use ultrasound and how to reduce noise between floors in your daily life.
After reading this book, every time you hear great music, you will be reminded of the scientific principles behind sound, bringing you one step closer to science.