Equations are a part that deals with mathematical problems that we encounter in daily life, and are closely connected to our lives.
Although we have indirect experience with equations in elementary school, we learn the exact definition of equations in middle school.
"The concept of linear equations comes first" is composed of three volumes.
Volume 1 covers the basics of equations, and from Volume 2 onwards, we begin to deal with problems that utilize equations in earnest.
Volume 3 covers problems related to speed, excess, deficiency, and work through the use of equations, and then covers the types of problems covered in Volumes 1-3, allowing you to practice and prepare for the real thing with mock exams.

1.
Practice drawing diagrams and images.
In 『Linear Equation Concepts Come First 3』, real-life problems such as speed, geometry, excess and deficiency, and work are covered.
Although it may seem complicated, I have organized it to help you understand the problem by drawing a picture of the given situation and writing down the conditions.
And it gave us practice in creating equations with different elements.
You can challenge yourself step by step, from simple to complex problems.


2.
Present the basis of logic!
Because mathematics is a logical discipline, if there is a hole at any stage, it is difficult to build new knowledge thereafter.
The same applies when setting up equations.
In 『The Concept of Linear Equations Comes First 3』, rather than simply solving problems with formulas, we explain the fundamental principles of why equations are created that way.
In particular, units are important for problems related to speed, so the problems are structured to allow practice in converting units such as units of distance, units of speed, and units of time, and to set up equations by matching the units.

3.
The important thing is big! In image!
You might think a book that explains abstract mathematical concepts in a mathematical way would be difficult? Not so! This book explains abstract concepts in an accessible way, tailored to the learner's level.
The content is developed with interesting materials and pictures, and the intensity of the content is effectively expressed so that important information can be seen at a glance.
Discover "Linear Equations Concepts Come First 3," an intuitive design that allows you to grasp concepts at a glance, rich explanations, and packed with helpful problems.

4.
Friendly answer sheet!
All calculation processes are detailed as if a teacher were explaining the solution, and various clues hidden in the problem are highlighted with colors and arrows, so that you can intuitively know how to use them at which stage.
Take your friends' math skills to the next level with this friendly answer sheet.

5.
Free video lectures!
Rather than providing just one or two video lectures, this book provides video lectures throughout the book.
Because it includes complete concept explanations and problem-solving, you can study the entire book along with the lectures, or you can use the lectures to only cover the parts you need.
You can view the lecture immediately by simply scanning the QR code without having to register separately.
Additionally, you can use services such as answer sheets and online evaluations at Mathbus (www.mathbus.co.kr).
Have fun studying with a former EBS teacher's cheerful, refreshing, and exhilarating lectures!