[New Book Announcement]
A book that helps you understand our rapidly changing world through economics.
For your desire to understand.

"Economics: Understanding Micro and Macro Simultaneously in One Book" by Shinya Kato (Released July 8, 2026)
Kanki Publishing
https://amzn.asia/d/0iWeb7HF
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Course Homepage: https://introduction-to-economics.jp/...
The slides, quizzes, and practice problems for Lecture 7 can be downloaded as PDF files from the above URL.

(This video allows you to display Japanese and Chinese subtitles from the YouTube settings. Enjoy it even when you're out and about, such as during your commute.)

Introduction to Let's Start Economics

You can systematically learn introductory economics content through 16 video lessons.

The lessons were created with a strong focus on clarity and accuracy.

The topics covered in this course are equivalent to those taught to first-year economics students, but they all represent the fundamentals of economics.

I hope that you will learn the basics of economics in this course and use them to further your own academic development.

• Curriculum
Guidance (29 minutes 18 seconds)
Lecture 0: Introduction to Economic Mathematics (1 hour 58 minutes)
Lecture 1: Markets (59 minutes 48 seconds)
Lecture 2: Price Elasticity (52 minutes 30 seconds)
Lecture 3: Budget Lines and Indifference Curves (52 minutes 47 seconds)
Lecture 4: Marginal Utility and Marginal Rate of Substitution (59 minutes 27 seconds)
Lecture 5: Utility Maximization (41 minutes 08 seconds)
Lecture 6: Costs (50 minutes 53 seconds)
Lecture 7: Profit Maximization (55 minutes 09 seconds)
Part 1: Profit Maximization Conditions [Currently Watching Video]
Part 2: Determining Production Quantity ① [Next Video]
: はじめよう経済学「第７講 利潤最大化」その② 生産量の決定①
Part 3: Break-Even Point
: はじめよう経済学「第７講 利潤最大化」その③ 損益分岐点
Part 4 Determining Production Volume ②
　：はじめよう経済学「第７講 利潤最大化」その④ 生産量の決定②
Lecture 8: GDP (51 minutes 51 seconds)
Lecture 9: The Principle of Three-Sided Equivalence (39 minutes 36 seconds)
Lecture 10: 45-Degree Line Analysis (1) (38 minutes 45 seconds)
Lecture 11: 45-Degree Line Analysis (2) (38 minutes 51 seconds)
Lecture 12: IS-LM Analysis (1) (31 minutes 01 seconds)
Lecture 13: Money and Bonds (53 minutes 57 seconds)
Lecture 14: IS-LM Analysis (2) (34 minutes 35 seconds)
Lecture 15: Introduction to Game Theory (52 minutes 00 seconds)
　Microeconomics Field: Lectures 1-7, 15
　Macroeconomics Field: Lectures 8-14

• Efficient Learning Methods
Here's a brief overview of recommended learning procedures.

While you can simply watch the video lectures from the first lesson, following these steps is more efficient for steadily deepening your understanding:
Step 1: Watch the first lesson
Step 2: Solve the problems in the first lesson of the problem set "Let's Start Economics"
Step 3: Watch the second lesson
Step 4: Solve the problems in the second lesson of the problem set "Let's Start Economics"
Step 5: Watch the third lesson (and repeat)
The problem set can be downloaded from the course homepage (URL at the top).
Studying is about "slow and steady wins the race." Understanding deepens only through diligently working through problems.
If you are serious about studying economics, please make use of the problem set.
For more detailed learning instructions, please watch the "Guidance" video in the curriculum above.
Also, a tablet device such as an iPad is convenient for using the problem set, so the following video provides a brief explanation of how to use an iPad.
Video "Getting Started with iPad Techniques for Economics"
: はじめよう経済学「iPad活用術」

• Questions from the Class
Please write any questions regarding the course content in the YouTube comment section.
Past questions are also posted on the course website as "Questions from the Class."
*1 Comments are subject to approval and will not be reflected immediately.
*2 Please understand that we may not be able to answer all questions.
*3 Please check the following URL for information on how "Questions from the Class" works.
https://introduction-to-economics.jp/...

• Upcoming Streaming Schedule
Please see the channel's description.

• Instructor Introduction
Shinya Kato (University Professor, PhD in Economics)

#Microeconomics #ProfitMaximization #P=MC