preface
Chapter 1: Heart-Pounding Math Tricks - Math Tricks and Tips
Chapter 2: My Childhood Wasn't Like That - Math Goes Viral in the Pre-Internet Era
Chapter 3: Back to School - Hot Topic Test Questions and Classroom Challenges
Chapter 4: Incorrect Operations - The Troublesome Sequence of Operations
Chapter 5: Bad Math - When Facebook Met Algebra
Chapter 6: Into the World of Shapes - Knee-slapping Geometry Problems
Conclusion - What is the future of mathematics, a hot topic on social media?
solution

# Even those who fail at math like SNS math puzzles.

You who shudder at the thought of math!

Have you ever laughed while watching puzzles on Facebook or YouTube?

If you hate math but love math puzzles that make you leave comments like a charm, then you've stepped into the world of math.
This book analyzes why math puzzles attract people's attention on social media and goes on to explain what mathematical concepts we should learn through such puzzles.

For example, let's look at the question asked on the cover of a book.

You ask which pizza is better: one 18-inch pizza or two 12-inch pizzas.

Intuitively, it seems like choosing two 12-inch pizzas would be more advantageous.
You probably do a rough calculation like this in your head:
'There are two 12-inch ones, so it's roughly 24, which is definitely bigger than 18.'
But this intuitive thinking is wrong.
If you think about it, we already memorized the formula for calculating the area of ​​a circle in middle school.
I just didn't use it.
The phrase 'pi squared' will come to mind.
In symbols, it is written as ????².
?? is a value of approximately 3.14, but you don't need to calculate this.
Because we only need to compare the areas of two pizzas.
?? refers to the radius.
So the radius of an 18-inch pizza is 9, so when you square it, it's 81.
The radius of a 12-inch pizza is 6.
If you square it, it's 36, and if you add the two plates, it's 72.
Since it's 81 and 72, an 18-inch pizza is wider.

# SNS Math Boosts Math Interest

When people see problems like this on social media, they get curious and try to solve them.
The same goes for people who hate math.
And as you watch the solution, you'll exclaim, "Aha!" and recall simple mathematical concepts you learned previously. This is a positive function of SNS mathematics.

Also, when I look at problems like the 'mystery of the lost pound' (in Korea, it's a problem that comes up when you search for 'jeweler's loss'), I get lost wondering where the pound has gone.
If you organize it mathematically, it's very simple, but it's a trick that confuses people.

By looking at these various problems, you can experience the concepts expanding to algebra, exponents, equations, shapes, and even differentiation.
Of course, all the mathematics explained in this book can be sufficiently understood at the level we learned in middle school.
The author also takes the time to put difficult concepts at the back of the book, so that readers can look them up if they really need to.


If we consider what kind of math puzzles people find interesting, we can find answers to why we lost interest in math.
Math used to be fun and something close to everyday life, but you may have lost interest in it because you were only solving random problems.
'Amazing Social Media Math' shows you how to get that excitement back.