Have you ever had a teacher this strict?
Japanese homework can be tough sometimes, especially depending on the teacher. A simple math problem can evolve to criticizing your lifestyle, and an English writing assignment can turn into a poem about the futility of life.
Twitter user @r_yukitok Tweeted a photo of a homework assignment sent by his sister that captured the attention of other Japanese Twitter users.
▼ “My sister sent this to me and asked me to tell her why it’s marked wrong, but the reason is so hard to figure out that it made me laugh.“
https://twitter.com/r_yukitok/status/1085534924235431937The instructions for problem four are to draw one triangle and one square using straight lines in the two answer areas. Though the child’s answers appear to be correct, they’re each marked with a triangle, meaning “not quite right.” The same thing happens in problem five, which instructs the child to draw a shape with two sides measuring three centimeters (1.2 inches) and two sides measuring six centimeters (2.4 inches).
The saga continued. The Twitter user’s sister asked the teacher in question what was wrong with the assignment. The answer may cause you some confusion, and maybe even some outrage.
▼ The update contains a new photo, and we’ve translated the text of the Tweet below.
https://twitter.com/r_yukitok/status/1085914476753313792“I’m surprised this is making such waves…! Today, she went to ask the teacher for the reason, and the reason was, ‘Some of the lines aren’t completely straight.’ Also, there were a lot of notes asking to mark right angles, but as a second-year elementary school student, they haven’t learned that yet. The lines looked disconnected due to the lighting of the previous photo.“
As you can imagine, many people are surprised that a second-year student is expected to draw perfectly straight lines and remember to mark their right angles. How can you remember something you’ve never learned? Here’s what some netizens said:
“This teacher’s line of thinking isn’t completely straight either.”
“This would be marked incorrect if it was a drafting test, but this is from a math class? Insane.”
“Elementary school students these days have it rough…”
“I want to tell this mother that in order to prevent their child from thinking math is boring because of this experience, they shouldn’t be complaining about their dissatisfaction with the teacher – they should be praising their child and reassuring them.”
Maybe the teacher in question could ease up and learn something from the teacher who assigned hugging homework to their students.
Sources: Twitter/@r_yukitok via Net Lab
Featured image: Twitter/r_yukitok

First-grader’s math test accidentally turns into treatise on confusing Japanese linguistics
Strap on your thinking caps for an extra-dumb, hypocritical Japanese teacher correction
High school teacher’s summer vacation homework about appreciating life brings tears to our eyes
Japanese student told they will be penalized for not using a ruler to draw multiplication lines
Japan enters Golden Week vacation period, survey shows one in three plan to ride it out at home
Japan’s new Pokémon jackets give you the look and powers of the Kanto starter trio
Viral tweet suggests Japanese convenience store ripping off customers with donuts, so we investigate
Studio Ghibli releases new anime keychains that are like miniature figurines
Lipton releases… Pudding Milk Tea in Japan?!?
Retro-style Evangelion T-shirts coming to Uniqlo sister brand GU[Photos]
Sega opening 65th anniversary store in downtotn Tokyo with deep-cut game merch
Japanese people share 11 amusing tales relating to pregnancy and childbirth
Shinto shrine will bless your bike helmet and give you a sacred bike helmet stamp
Bandai cancels gacha/blind-buy system for anime cosmetics, will let fans choose what they buy
New Kyoto Converse sneakers celebrate Japan with traditional kimono fabrics for your feet
Brand-new Square Enix Cafe to open in Tokyo…and in Los Angeles too!
Japan’s 5.3 million beautiful Hitachi Nemophila flowers are now in full bloom[Photos]
Tifa’s Final Fantasy VII bar is going to pop up in real-world Tokyo
Studio Ghibli launches huge new anime movie T-shirt collection with special design details
Hello Kitty is now a transforming truck robot[Photos]
Tsujihan sushi bowl restaurant goes viral with foreign tourists, but is it worth the hype?
Japan reportedly adding Japanese language skill requirement to most common foreigner work visa
Pokémon and Ikea Japan cross over into each other’s worlds with collaboration events
Wisteria season starts early with blooming of Japan’s Great Wisteria in its beautiful garden
Japan’s best conveyor belt sushi restaurant of seven years ago has now, finally, come to Tokyo
Brand-new Pokémon manhole covers coming to help the recovery of a disaster-stricken part of Japan
Japan’s awesomely beautiful Alpen Route snow corridor is now open
Injuries on stairs in Tokyo highlight an overlooked design flaw
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
Starbucks Japan releases new sakura goods and drinkware for cherry blossom season 2026
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
Japanese elementary school kid says 12 x 25 = 300, teacher doesn’t say he’s answered correctly
9+3=12? Nope, that’s wrong, says Japanese kid’s elementary school, thanks to “cherry calculation”