Quick middle school style for busy third-year middle school students

[First Yard] Trigonometry

01 Values ​​of trigonometric ratios
02 Finding the length of the sides of a triangle
03 Application of trigonometric ratio values
04 The values ​​of trigonometric ratios of 30, 45, and 60 degrees
05 Values ​​of various trigonometric ratios
06 Finding side lengths using trigonometric ratios
07 Finding the area of ​​a shape using trigonometric ratios
· Real past questions from the March mock exam for first-year high school students on trigonometry

[Second Yard] The Nature of a Circle

08 Center and chord of the circle
09 Application of tangent to a circle
10 The size of a central angle
11 The size of the central angle and the length of the arc
Polygon inscribed in a circle
13 The angle formed by the tangent and the chord
· Properties of circles, real questions from the March mock exam for first-year students

[Third Yard] Statistics

14 Representative values
15 Variance and standard deviation
16 Scatterplots and Correlation
· Statistics High School 1st year March mock exam real past questions
[Special Appendix] 3 Years of Middle School Operations and Geometry Formulas
Table of trigonometric ratios

A basic workbook without pretense!
Quick Middle School Patterns for Busy Middle School Students

Middle school math is the foundation of higher level math!
How can I study efficiently?

If you have a solid foundation in middle school math, you will have no problem with high school math!
Mathematics is a subject with a strong systematic structure, with units linked from middle school mathematics to high school mathematics.
However, because the scope of higher mathematics is broad and the amount of learning is large, there is not enough time to review middle school mathematics whenever a learning deficit occurs.
Since mathematics is a subject that requires a solid foundation in order to advance, you need to lay a solid foundation in middle school mathematics to be able to study advanced mathematics without difficulty.


If you start with difficult problems, you will fail.
One of the environments that causes people to give up on math is 'difficult workbooks'.
Most middle school math workbooks are designed to have students solve difficult, advanced problems right after studying the concepts, even before they are comfortable with the basic problems.

The author of this book, teacher Im Mi-yeon, who has been teaching middle and high school students in Daechi-dong for over 10 years, says, “Middle school workbooks on the market these days contain many problems that make you wonder if students will be able to understand them.”
Solving advanced problems without even grasping the basic concepts is like building a castle on sand.
However, more students than you might think fall victim to difficult workbooks.
Studying becomes fun and worthwhile only when problems are solved.
If you don't want to give up on middle school math, it's best to build a solid foundation first with books that are easy enough for you to solve on your own, rather than difficult workbooks.

The second semester of the third year of middle school is mostly comprised of 'geometry' and some 'statistics'... .
The second semester math course for middle school students in all grades 1, 2, and 3 is about shapes (geometry).
Among them, the third-year course consists of geometry and statistics, and you need to understand and pass the third-year geometry content to do well in high school mathematics.
For example, the 'trigonometric ratio' learned in the third year of middle school is the basis for trigonometry learned in high school.
Therefore, you must master the concepts thoroughly before moving on to higher mathematics.

This book is a book that can be used to solve easy problems step by step using the basic concepts and formulas of middle school geometry. It is a unique book among the second semester math workbooks for third graders currently on the market that is designed to be solved independently without a teacher.


I can understand even if I watch it alone! It's like listening to it face to face.
Existing books simply collect vast amounts of knowledge into one volume, but do not teach you how to study it.
So, I often relied on my teacher.
However, this book also includes study tips that teachers used to give face-to-face.
It includes 'Busy Tips' filled with the know-how of a renowned instructor along with friendly explanations of the concepts at each stage, so you can understand it even if you study on your own.

Only the basic problems for the second semester of the third year are collected in one book.

This book covers not only geometry, but also all the math content learned in the second semester of the third grade.
From geometry to statistics, this book covers only the basic problems of the second semester of the third year's mathematics, allowing you to build a solid foundation.
If you train with this book and build a solid foundation, you'll gain the strength to tackle any type of advanced problem that comes your way.


Don't get what you know wrong! 70% of middle school students get this wrong, solved with the "Oops! Mistake" corner!
Even friends who are good at math often get their scores lowered by mistakes.
This book has a special device to prevent you from accidentally getting a score lower than your actual ability.
Through the "Oops! Mistake" corner on the concept page, we've compiled the points of mistakes that 70% of middle school students frequently make.
It also helps to drastically reduce mistakes by allowing users to directly solve and check shape problems of the 'Oops! Mistake' type.


Additionally, through the 'Free Test Problems' that appear at the end of each stage, we present middle school grade problems that can be solved with just the training practice in this book.
There are many test questions that you can get right on school exams if you just solve all the problems in this book.

Now you're a high school freshman! Get ready for high school admission all in one place!
This book includes 'real past questions from the March mock exam for first-year high school students' by unit and a special appendix titled 'middle school 3-year calculations and geometry formulas'.
The National Joint Academic Achievement Test for first-year high school students in March covers middle school mathematics.
Prepare for your first high school math mock exam with 'Busy Middle School Student'!

How to Effectively Study "Middle School Math for Busy Third-Year Students"

Busy Middle School Math Composition
*3rd grade, 1st semester course 『Busy Middle School Math』
Volume 1: Square Roots and Real Numbers, Multiplication of Polynomials, and Factorization
Volume 2, Quadratic Equations and Quadratic Functions
*3rd year, 2nd semester course 『Busy Middle School Student Type』
Trigonometric Ratios, Properties of Circles, Statistics

『Busy Middle School Math』 is composed of two volumes, 『Busy Middle School Calculation』, for the first semester, and one volume, 『Busy Middle School Geometry』, for the second semester.

1.
Want to strengthen only your weak areas? ― Choose just one of the three books!
If you have difficulty with square roots or factoring among the 3rd year of middle school curriculum, choose and organize the middle school calculations volume 1, 『Square roots and real numbers, multiplication of polynomials, and factoring area』; if you have difficulty with quadratic equations or quadratic functions, choose the middle school calculations volume 2, 『Quadratic equations, quadratic function area』; and if you have difficulty with shapes, choose and organize the middle school shapes book, 『Trigonometric ratios, properties of circles, statistics』.
Even if you are a 3rd year middle school student or a 1st year high school student, focus on studying your weak areas to quickly make up for your learning deficits.

2.
What if I am a 3rd year middle school student but weak in math, or a 2nd year middle school student preparing for 3rd year middle school math?
Study in the following order: Middle School Calculation Volume 1 → Middle School Calculation Volume 2 → Middle School Geometry, according to the middle school math progress.
You can solve basic problems, so you can build a solid foundation for middle school math.

3.
What if you are a teacher at a school or a study room?
This book is designed to ease the burden on teachers.

1) For students who lack basic knowledge, briefly explain the concepts and then use it as a self-study material.

2) For students who have mastered the concept, use it as a textbook for homework.
3) It is suitable as a short-term textbook for vacation to supplement light pre-learning and learning deficits.

Busy Middle School Calculation Volume 1 consists of 26 levels, Volume 2 consists of 20 levels, and Middle School Geometry consists of 16 levels.

[Reader Reviews]

I studied with this book and scored a 96.5 on my midterm! My child's math score has improved significantly, and both I and I are very satisfied and happy! - Chani Mom

The perfect book for my child who wanted a solid foundation! - Kkumnarae

I was so happy and excited to read this book that I wanted to shout out loud.
This book helped me not give up on studying math and continue to improve my skills.
- chfhddl

This is a basic workbook without any pretense, making it perfect for pre-study! - Seo Eun-ah, a study room teacher