I have just known from an NHK program, "free research is a phantom subject that disappeared after four years".
It seemed to be same as Math. and Japanese.
Some people who are more than 81 years old, remember the "free research" subject.
However, it was going to be abolished to shift "systematic education", it meant "packed education".
As for teachers in class, they felt that it was a "waste" and wanted to leave it as homeworks for the summer vacation.
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In 1974, "free research" was a subject, so teachers were mentors (or advisors) for the subject.
Now for the "free research", the guardians are going to be enforced to be the roles.
As a result, the guardians as a mentor come to feel a stomach pain every summer.
The reason is that "free research" is not only difficult but also to specific the level-control.
In conclusion, they cannot know "theme", "quality" and "quantity" of the free research.
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I remember writing the story of "something with the word "free", have people suffer".
I think that teachers should deliver the past "free research" to both the children and guardians.
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Oh, this is the year I was going to write 'Introduction to EXCEL for creating a proper free research report in the last three days of summer holiday', but I completely forgot about it.