Japanese schools continue in their quest to make math as annoying and tedious as possible.
I always liked math class as a student. I saw it as a kind of language that transcended culture and even humanity and could define the entire universe. However, I could also understand why a lot of people didn’t feel the same way.
Math is also a dry pursuit often contained to a rigid set of rules allowing for little creativity, which turns a lot of free-thinking types off. And it’s this very hatred that some teachers in Japan seem to really want to instill in today’s youth by piling on even more restrictions than common sense could comprehend.
Only a few days ago we saw an unfortunate pupil get marks deducted for doing simple arithmetic correctly but failing to draw little cherries in the process. Now, according to a tweet by Torafugu (@Toraphgu) it appears some older students must refrain from drawing horizontal lines without the aid of a ruler, no matter what the circumstances.
▼ “Today I was surprised to learn from the students of the cram school where I teach, that they will be penalized for not using a rule when writing calculations by hand. This is worse than the cherries.”
今日、教えてる塾の生徒に「小学校では筆算の線を定規で書かないとバツになる」って話を聞いて腰が抜けるほど驚いた
— とらふぐ (@Toraphgu) November 15, 2018
さくらんぼ算よりひどい pic.twitter.com/5HXMs93NNM
The image, provided by the cram school teacher, shows an example of this unidentified school’s rule in which a multiplication problem is worked out in two identical ways. However, because the one on the right used a ruler for its horizontal lines, it is deemed correct.
On the other hand, the calculation on the left didn’t use a ruler. As such the lines are slightly wavy and the entire solution is rendered worthless in the eyes of the teacher.
It is unclear why the teacher didn’t just go all out and make them write the multiplication sign and all the numbers with a ruler and compass as well. You’re never too young to get into drafting!
Needless to say, the Internet was once again up in arms over yet another brick in the wall.
“I’m beginning to think elementary school teachers are overworked…and slightly mad.”
“I’d like to hear this teacher’s explanation to why it’s not good.”
“My kid told me this too! It has nothing to do with math! Drawing a line by hand is fine!”
“Insane…”
“I actually think using a ruler is helpful and lets kids take pride in their work. But punishing them for not using a ruler is the wrong approach.”
“When I was a student I used to use the edge of my book as a ruler. That’d be really hard for this.”
“Has Japanese education gotten this bad?”
“I remember being taught not to use a ruler, because it’s a waste of time.”
“I’m trying to figure out the meaning behind the straight lines, but I’m coming up with nothing.”
“I wonder if the teachers that do these things were messed with as students and are no taking it all out on the next generation.”
My best guess is that this teacher has some connection to the ruler industry. As we go deeper into the digital era, our dependence on rulers is at an all-time low. So, in an effort to rekindle our love affair with those straight edges, this teacher has taken it upon themselves to force them back into use.
▼ Hang in there CESS! Someone’s got your back.
Or, considering the increasing rate that these incidents seem to be popping up from the “proper way to write a four” to “the proper order to multiply numbers together,” its seeming more and more like the teachers are just screwing with society at large.
I know if I were a math teacher looking at all these viral tweets, it would be hard to resist my inner troll and not say, “Okay, class, from now on you must write all numbers in ascending sizes. So help me if I see a seven that’s bigger than an eight, you can look forward to a career as a powder monkey.”
Source: Twitter/@Toraphgu, Hachima Kiko
Featured image: Twitter/@Toraphgu
Insert image ©SoraNews24


Student penalized for writing the number “4” the “wrong” way on worksheet
Strap on your thinking caps for an extra-dumb, hypocritical Japanese teacher correction
9+3=12? Nope, that’s wrong, says Japanese kid’s elementary school, thanks to “cherry calculation”
Uncle and netizens confused about child’s low grade on math assignment
Japanese school teacher in hot water for knocking student’s face against chalkboard, other abuse
Train station platform ramen store closes its doors on half a century of history in Tokyo
Japanese convenience store sandwiches get extra protection from new business backpack
Are Japanese convenience store sandwiches scamming us with their fillings?
Studio Ghibli adds new Mother’s Day gift sets to its anime collection in Japan
Is this Japan’s most extreme cherry blossom viewing? Leap, cycle and climb through 2,500 sakura
Japan’s budget chain restaurant Saizeriya might just be the perfect first date location
Believe it or not, this isn’t a Tokyo vending machine – It’s a secret door to deliciousness
The next time you’re feeling stressed out, you could relax on a Pokémon Psyduck chair from Japan
Japanese man drives truck that’s on fire directly to fire station, drops flaming potatoes[Videos]
Komachi Shokudo: Japanese mum’s-style cooking for breakfast, lunch and dinner in Tokyo
Studio Ghibli releases Catbus pullback keychain that runs like the anime character
Nine great places to see spring flowers in Japan, as chosen by travelers (with almost no sakura)
Starbucks Japan opens new cafe and art gallery in top Tokyo tourist neighbourhood
Virtual idol Hatsune Miku redesigned with look that adds new elements and brings back old ones
The top 10 graduation songs in Japan as chosen by current Japanese high school students
Pizza Hut Japan teams up with creator of one of the country’s best kinds of ramen for ramen pizza
Starbucks Japan unveils new sakura cherry blossom collection for hanami season 2026
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
The 10 most annoying things foreign tourists do on Japanese trains, according to locals
Naruto and Converse team up for new line of shinobi sneakers[Photos]
Starbucks Japan releases first-ever Hinamatsuri Girls’ Day Frappuccino
Japan’s cherry blossom season predicted to start earlier than we’d thought, especially in Tokyo
Starbucks Japan releases a new Cream Puff Frappuccino for a limited time
Survey asks foreign tourists what bothered them in Japan, more than half gave same answer
Japan’s human washing machines will go on sale to general public, demos to be held in Tokyo
Starbucks Japan releases new drinkware and goods for Valentine’s Day
We deeply regret going into this tunnel on our walk in the mountains of Japan
Studio Ghibli releases Kodama forest spirits from Princess Mononoke to light up your home
Japan’s newest Shinkansen has no seats…or passengers [Video]
Major Japanese hotel chain says reservations via overseas booking sites may not be valid
Put sesame oil in your coffee? Japanese maker says it’s the best way to start your day【Taste test】
No more using real katana for tourism activities, Japan’s National Police Agency says
Don’t like trigonometry? Then you’re just like Hitler, says Japanese high school English teacher
Japanese teacher beats up student for making fun of his body by calling him anime character name
“Peaceful life with many dogs” is unacceptable dream, Japanese high school teacher tells student
Japanese elementary school teachers may tell you “5 x 100 = 500” is wrong
Japanese high school will suspend students who don’t reveal their social media account names
Japan’s Shizuoka bans teachers from personal communication with students on social media
Japanese elementary school kid says 12 x 25 = 300, teacher doesn’t say he’s answered correctly
Japanese teacher has student make written apology for farting in class, displays it in classroom
Students confused over Japanese school banning ponytails for “conjuring lustful feelings”
“5 + 9” is okay but “9 + 5” is wrong? Is this being logical or overly picky?
Japanese teacher apologizes for peeing on students’ futon during club retreat
Students hospitalized after eating teacher’s homemade yogurt in Nagoya
Japanese university graduate students solve 2,000 year mathematical problem
Japanese elementary teacher busted for hiding students’ shoes, writing “die” on their belongings
Is Japan overworking its teachers? One exhausted educator says, “YES!”