To begin with

Chapter 1: Biology
1-1 Plants' efforts to transfer pollen
-What flowers do
1-2 The Mystery of the Fruits and Seeds of Plants
-Appearance of the plant before and after pollination
1-3 Angiosperms and Gymnosperms
-Difference between angiosperms and gymnosperms
1-4 Structure of leaves and roots of dicotyledons and monocotyledons
-Characteristics of dicotyledons and monocotyledons
1-5 Forked and Tubered Flowers - The Secret of the Dandelion Flower
- Structure of flower petals
1-6 Ferns and bryophytes multiply their mates without producing seeds?
-plants that do not produce seeds
1-7 Do you know the characteristics of vertebrates and what the five groups are?
-a group of vertebrates
1-8 Spiders aren't insects? What are arthropods?
- Invertebrate group
1-9 Legs grow from the head? The mystery of mollusks.
-A group of mollusks
1-10 What is the body of a living thing made of?
-Cell structure of plants and animals
1-11 What is Digestion? The Structure of the Human Digestive System
-Digestion and absorption
1-12 The principle of breathing possible even though the lungs have no muscles
-Structure and function of the lungs
1-13 Four components in human blood
-What blood does
1-14 Differences between arteries, veins, arterial blood, and venous blood
-Human blood vessels and blood circulation
1-15 Structure of the Human Eye - Are there places in the eye that cannot be detected?
-The structure and function of the eye
1-16 Structure of the Human Ear - Do humans balance with their ears?
-The structure and function of the ear
1-17 Stimulus and Response - The Mystery of the Nerve
-The principle of human reaction
1-18 What are sexual and asexual reproduction? Advantages and disadvantages
-How living things multiply
1-19 The Structure of Genetics - A Child's Blood Type Can Be Predicted
-The structure of genes
1-20 Food chain and biodiversity balance
-Eat and be eaten relationship
1-21 Why aren't mountains covered with corpses?
- Decomposers and the carbon cycle

Chapter 2 Chemistry
2-1 Is it a big misconception that metals stick to magnets?
-Common properties of metals
2-2 What are organic and inorganic substances? Let's learn about their origins.
-Organic and inorganic substances
What is 2-3 density? Let's learn through great people.
-Density size
2-4 What is a change of state? Changes in volume and mass
-Changes in state and volume and mass
2-5 What is temperature? Its relationship to changes in state.
-State change and temperature
2-6 Properties of familiar gases - focusing on oxygen and carbon dioxide
-Properties of gases
2-7 What is the difference between atoms and molecules?
-Difference between atoms and molecules
2-8 You can understand substances by looking at their chemical formulas.
-Chemical formula of a substance
2-9 Important Points on Writing Chemical Reaction Equations
-Order of writing chemical reaction equations
2-10 Changes in which oxygen is combined and removed
-Oxidation and reduction
2-11 Mass before and after chemical change and the law of conservation of mass
-Chemical changes and mass
2-12 What is an ion? The structure of atoms and the principles of ion formation.
-The principle of ion generation
2-13 Ionization tendency and battery structure
-Ionization tendency of metals
2-14 Acidic and alkaline properties and identity
-Acidity and alkalinity
2-15 Neutralization and Salts - The Principle of Neutralization as Explained by Ions
-Chinese and salt

Chapter 3 Earth Science
3-1 Where Do Rocks Come From? The Secrets of Igneous Rock
-Structure of igneous rocks
3-2 Is This a Gem? Minerals Learned in Middle School Science
-Various minerals
3-3 What is sedimentary rock? Rocks formed over long periods of time.
-How sedimentary rocks are formed
3-4 Understanding the Past of Earth through Fossils
- Award fossils and standard fossils
3-5 Difference between Magnitude and Progress
-The magnitude of the earthquake's shaking
3-6 Is the Earth Moving? What is Plate Tectonics?
-Plate tectonics
3-7 The difference between clear and cloudy skies, sleet and hail
-Weather types and weather symbols
3-8 How to memorize the 16 cardinal directions without getting confused
-Wind direction and 16 directions
3-9 What is the dew point? Why do water droplets form on cups in the summer?
-Dew point and saturated water vapor content
3-10 How Clouds Form - Why the Bottom of a Cloud Is Flat
-Water vapor and clouds
3-11 What is 100% humidity? Water vapor contained in the air.
-How to calculate humidity
3-12 What are low pressure and high pressure?
-Isobars and low and high pressure
3-13 What is a wire? The principles and characteristics of wire formation.
-Various wires
3-14 Characteristics of the Sun - Let's Learn About Different Dimensions of Energy
-The appearance of the sun
3-15 What is the Solar System? Characteristics of the Eight Planets
-Characteristics of the planets in the solar system
3-16 The movement of stars during a day - Earth's rotation and diurnal motion
-The daily motion of the stars
3-17 Where will you be living in six months? Earth's revolution and annual motion
-Star's performance movement
3-18 The Mystery of the Moon - The Mystery of the Nearest Celestial Body
-Moon phase changes
3-19 Solar and Lunar Eclipses - The Relationship Between the Sun and the Moon
-The structure of solar and lunar eclipses
3-20 Is Venus visible only in the morning or evening? Why?
-The way Venus looks

Chapter 4 Physics
4-1 The Mystery of Light - What is the principle by which things are seen?
-The way light and objects are seen
4-2 Refraction of Light - Why Objects Appear Bent
-Refraction of light
4-3 Why do fireworks sound so late?
-Difference between the speed of light and sound
4-4 Three Actions of Force and the Arrow of Force
-Action of force
4-5 What is the difference between force and pressure? Force applied in everyday life
-Difference between force and pressure
4-6 Water Pressure and Buoyancy - Understanding Their Meanings
-Difference between water pressure and buoyancy
4-7 The unit of weight is not kg?
-Difference between mass and weight
4-8 What are series and parallel circuits? There's only one key difference.
-How to view circuit diagrams
4-9 What is current? Let's understand it simply with images!
-What is current?
Knowing Voltage 4-10 Understands Circuits! - What's the Difference Between Current and Voltage?
-What is voltage?
4-11 Ohm's Law - There is no law more convenient than this.
-Calculation of Ohm's law
4-12 Why does static electricity occur? The principle of how electricity accumulates on objects.
-The principle of static electricity generation
4-13 What is the nature of current? Let's explore the mysteries of electrons.
- Current stagnation
4-14 What is a Magnetic Field? Its Mysterious Relationship with Electric Current
-Current and magnetic field
4-15 Electromagnetic Induction and Induced Currents - Principles of Power Generation
-Electromagnetic induction and induced current
4-16 Fleming's Left-Hand Rule - Let's Learn About That Famous Rule
-Relationship between current, magnetic field, and force
4-17 Why does the motor turn? The culmination of human wisdom.
-Motor structure
4-18 Uniform Rectangular Motion and the Law of Inertia
- Force and motion of objects
What is 4-19? What does science say about work and the principles of work?
-The relationship between power and work
4-20 What is the law of conservation of mechanical energy?
-Kinetic energy and potential energy
4-21 Conversion and Conservation of Energy
-Various energies

Middle school science in one hand
This book is organized in the order of biology, chemistry, earth science, and physics.
In Chapter 1, we first look at plants.
It covers flowers, pollination, angiosperms and gymnosperms, dicotyledons and monocotyledons, and finally ferns and bryophytes.
Next, let's look at the characteristics of animals.
Observe vertebrates, invertebrates, and mollusks.
It also deals with the human body, one of the animals, and explains digestion and absorption, the lungs, blood and blood vessels, the structure of the eyes and ears, and nerves.
Finally, we look at reproduction, genetics, and the food chain.
Chapter 2, Chemistry, begins with learning about the properties of metals and then covers organic and inorganic substances.
After examining density, changes in state, temperature, and the properties of gases, it covers atoms and molecules, chemical formulas, oxidation and reduction, chemical changes, ions, acidity and alkalinity, neutralization, and salts.

In Chapter 3, Earth Science, we will look at rocks and minerals, then learn about fossils, earthquakes, and plate tectonics.
After looking at the weather, dew point, clouds, humidity, and various fronts, it tells you about the sun, the planets in the solar system, the moon, and solar and lunar eclipses.
Chapter 4 begins by learning about light and sound.
After explaining the differences and characteristics of force and pressure, water pressure and buoyancy, mass and weight, we move on to the circuit diagram.
Learn about series and parallel circuits, current, voltage, and resistance, and learn about static electricity, current and magnetic fields, and Fleming's left-hand rule.
Finally, it explains the laws of uniform rectilinear motion and inertia, force and work, kinetic energy and potential energy, and conversion and conservation of energy.

Middle school science may be the starting point for curiosity about science.
Just knowing middle school science is enough to discover various scientific phenomena around us.
This book will help spark your interest in science.