Doraemon and Jiyū Kenkyū: Why Every Japanese Child Must Invent a Science Project Each August

Spoiler-Free Cultural Analysis

This article looks at the real history behind a piece of Japanese school life that ドラえもん(Doraemon: the long-running manga and anime about a robot cat from the future) has been quietly documenting for decades. There are no plot revelations here — only the culture, the history, and the odd bureaucratic accident that put this assignment into every Japanese summer.

Key Takeaways

• 自由研究(Jiyū Kenkyū: free research) is not a science-fair entry and not a set exercise. The child chooses the question, the method, and the format — which is precisely what makes it so difficult.
• For four years after the war it was not homework at all. It was a school subject with its own slot on the timetable, alongside arithmetic and Japanese, before being quietly dissolved.
• The comedy in Doraemon around unfinished summer homework works because the assignment is genuinely open-ended. You cannot cram an open question the night before, and every Japanese reader knows it.

Key Terms Explained

• 自由研究(Jiyū Kenkyū) / Free Research — An open-ended summer project in which the pupil picks their own topic and presents it however they choose. Observation diaries, insect collections, homemade experiments, local history surveys.
• 夏休みの宿題(Natsuyasumi no Shukudai) / Summer Holiday Homework — The bundle of assignments issued before the break, of which jiyū kenkyū is usually the largest single item.
• 学習指導要領(Gakushū Shidō Yōryō) / Course of Study — The national curriculum guidelines issued by the education ministry, revised roughly every decade.
• 教科外活動(Kyōka-gai Katsudō) / Extra-Curricular Activities — The category created in 1951 that absorbed several things which had previously been subjects in their own right.
• 絵日記(Enikki) / Picture Diary — A daily illustrated journal, the other classic summer assignment, and the one most often abandoned by mid-August.

The Notebook That Stayed Blank Until the Twenty-Eighth

I grew up in a small single-storey house in 足立区(Adachi-ku: a working-class ward in north-east Tokyo), and the shape of my summers was fixed. Mornings belonged to radio exercises in the local car park. Afternoons belonged to whatever we could get away with. And on the desk, all through July and most of August, sat a notebook with nothing in it.

That notebook was the jiyū kenkyū. Everything else in the homework bundle could be attacked directly — arithmetic drills had answers, kanji practice had a fixed number of squares to fill. The free-research notebook had none of that. It asked a question no adult would answer for me: what do you want to find out?

I remember the particular quality of that dread, because it was different from ordinary laziness. Ordinary homework you avoid because it is boring. This one you avoid because you cannot start. Choosing the topic was the work, and choosing it in a hot room with the cicadas going felt impossible.

The neighbourhood was full of half-solutions. The 文房具屋(Bunbōguya: stationery shop) sold kits — crystal-growing sets, pressed-flower boards, moulds for plaster casts of leaves. Buying one felt like cheating, and buying one was also the only reason a great many notebooks got filled at all. I suspect that tension is familiar to anyone who has ever set an open-ended task and then watched people quietly convert it into a closed one.

The Subject That Existed for Four Years

Here is the part that surprised me when I finally went looking, decades later.

Jiyū kenkyū was not invented as homework. It began as a school subject.

1947: A Slot on the Timetable

When Japan's first 学習指導要領(Gakushū Shidō Yōryō: national course of study) was issued in 1947, under the postwar education reforms, 自由研究 appeared in it as a subject in its own right. Pupils in the fourth to sixth years of elementary school were given roughly two hours a week for it, listed alongside 国語(Kokugo: Japanese language) and 算数(Sansū: arithmetic).

The thinking behind it belonged to its moment. The prewar system had been built on recitation and uniformity, and the reformers wanted something at the opposite pole: time in which a child pursued their own interest, at their own pace, without a fixed answer waiting at the end. It was, in the most literal sense, free.

1951: Quietly Dissolved

It lasted four years. In the 1951 revision, the subject was renamed and reorganised into 教科外活動(Kyōka-gai Katsudō: extra-curricular activities), and its content was largely folded into クラブ活動(Kurabu Katsudō: club activities). As a subject with its own hours, 自由研究 simply stopped existing.

Four years is nothing. Most Japanese people alive today were never taught it as a subject and have no idea it ever was one.

What Refused to Disappear

And yet the name survived — not on the timetable, but in the July envelope of summer assignments. Individual schools kept setting it. There is no national rule requiring it; the ministry does not mandate a free-research project. It persists because schools keep choosing to set it, year after year, in an unbroken chain from a subject that was abolished before most of the teachers setting it were born.

That is a strange kind of afterlife. The institution died and the habit outlived it.

Why Nobita Cannot Simply Finish It

Doraemon has been running since 1969, from the pens of 藤子・F・不二雄(Fujiko F. Fujio: the pen name of Hiroshi Fujimoto), and the collapse of 野比のび太(Nobi Nobita: the perpetually unprepared schoolboy at the centre of the series) under his summer homework is one of its most durable recurring situations. Every August, the pile is untouched. Every August, a gadget is produced. Every August, it goes wrong.

The gag depends on something specific about the assignment. A stack of arithmetic could, in principle, be brute-forced — that is a quantity problem, and a story about a boy with a time machine solves quantity problems easily. Jiyū kenkyū is not a quantity problem. It asks for a question you cared enough to chase, and no device hands you that. Nobita's failure is funny because it is structurally guaranteed.

What an Open Question Costs

Living outside Japan for many years now, I have watched from a distance as the assignment has become, if anything, more fraught. The stationery kits have multiplied. Whole shelves of them appear in July, each promising a completed project in an afternoon.

I understand the appeal completely — I remember the blank notebook. But it is worth naming what gets traded away. A kit converts an open question into a set of instructions, which is exactly the transformation the 1947 reformers were trying to prevent. The child ends up with a finished object and no experience of having decided anything.

I do not want to be sentimental about it. Plenty of children in my own generation did the same thing with pressed flowers, and the ones who genuinely chased a question were always a minority. The difference is that the escape route is now smoother and better marketed.

What strikes me most, from a distance, is that Japan kept the assignment at all. A country with a reputation for standardised, answer-shaped schooling has held on for seventy-odd years to one task each year with no correct answer, no rubric worth the name, and no way to fail cleanly. The subject was abolished in 1951. The question it asked never was.

I have absorbed a great deal from living abroad, and I have been surprised by how much of the underlying frame stayed Japanese anyway — the sense of season, the way time gets marked. The blank notebook belongs to that layer. August, for me, still has an unanswered question sitting on a desk somewhere in it.

FAQ

Q: Is jiyū kenkyū required by law in Japan? A: No. There is no national requirement for a free-research project. It is set at the discretion of individual schools and teachers, which is why the format, length and deadline vary considerably from one school to another.

Q: What do children actually make for it? A: Almost anything. Common choices include insect and plant collections, weather or plant-growth observation diaries, simple home experiments, model-making, and surveys of local history or local shops. Older pupils sometimes produce written reports closer to an essay.

Q: Does the assignment continue into junior high and high school? A: It is most strongly associated with elementary school, where it is close to universal. Many junior high schools set something comparable, though it is often narrowed to a specific subject such as science or social studies. By high school it has largely disappeared.

Key Insights to Remember

• The hardest part of jiyū kenkyū is not the research but the choosing, and this is by design rather than by accident. The 1947 reformers wanted a space in the week where nobody told a child what to be curious about. That the space has survived only as an August obligation is a compromise, but it is a compromise that kept the question alive.
• Institutions can leave habits behind them that outlast the institution completely. Free research vanished from the timetable in 1951 and yet every Japanese summer since has carried it, transmitted teacher to teacher rather than by any rule. When you look closely at a national custom, you often find something like this underneath: not a policy, but the residue of one.
• Doraemon's summer homework episodes are usually read as gentle comedy about laziness, and they are more precise than that. The series keeps returning to the one assignment that cannot be shortcut, in a story world built entirely on shortcuts. That is a sharper joke about effort than it is usually given credit for.

Sources

• 自由研究 — Wikipedia
• 学習指導要領 — Wikipedia
• 昭和22〜25年の「自由研究」は、教科のひとつだった!? — ベネッセ教育情報サイト
• 「自由研究」の廃止過程の検証と木宮乾峰の「教育課程」概念 — 琉球大学学術リポジトリ