Just wanted to say thanks to the people still posting translations. I haven’t been able to contribute recently as things at work have been changing and I just haven’t had the time. 
Hopefully once things have settled down I will be able to fit it back into my schedule again, but you are all doing an amazing job and it’s super helpful for a beginner like me. 
I’d be keen to continue with another book after this considering the Beginner book-club has titles which are fun but just a tiny bit too complicated for my level.
Enjoy Hawaii!
I’m really interested as well! I would love to join if there’s a group of people who wants to read another book on this kind of level. I just don’t have the courage to open a new thread as I’m fairly new to the community and haven’t joined any reading/book group yet… so I don’t really know how things work (yet).
It’s dead easy to set up a reading group on the WK forums!
But now, please, for the sake of future readers of this thread, can we get back back to the book! Further discussion could happen in a new thread, or in an already existing thread. But best of all (in my opinion) is action not words - anyone can set up a club any time, you don’t need discussion or permission to do so! If anyone would like to set up the next なぜ？どして？book (or any other!), go for it!
Page 89
Start of section 4!
学校 • くらしなどのふしぎ
School, life, and what have you, it’s amazing
Opening Post
Section one
Section two
Section three
Post-book-club discussion
Just to close the discussion, I have created that post, so if anyone wants to discuss, go there!!
Page 90
学校の チャイムの メロディーは、イギリスから 来たんだって!
Did I hear that the school bell’s melody came from England!
あなたが 通っている 学校では、じゅぎょうの はじまりや おわりなどを 知らせる チャイムが なりますか。
When you are at school, are things like the start and end of classes made known by a bell?
日本の 学校の ほとんどが 「キーン コーン カーン コーン」と いう メロディーの チャイムを つかっています。
In most Japanese schools, they use a chime melody called “bing-bong-bang-bong”.
Asterisk comment (bottom of page 91 - but references to this sentence):
ちがう メロディーの チャイムを つかう 学校や、チャイムを つかわない 学校も あります。
There are schools that use different chime melodies, and schools that don’t use a chime.
Why did you translate it as “to be”? In WK I learned as “to commute”…
BTW: I have read today’s page and I have understood almost 100% of it without a dictionary!! 
I had “to commute” in my head from WK too but it didn’t make sense. Jisho has several other translations. I went for “to attend (school)” or just “to be at school” for a natural translation.
I like attend!! Great!
A more accurate way to translate this would be “At the school you attend, does a chime ring to let you know things like classes beginning and ending?”
通う just happens to be the word used for going to a school as well as to work on a regular basis. Dunno why we don’t use the word commute for school in English, honestly.
why does this thread use spoiler blur
Thanks, that makes sense. The あなたが通っている modifies the がっこう: the (you attending) school.
That ain’t the name of the song, just its onomatopoiea. It’s more like “a melody that goes…”. It’s not という meaning “named, called”, but rather quotation marker と + 言う (definition three).
I was gonna comment on the second half of that sentence. なります here is 鳴る. 
Cause communting is an adult thing.
Yeah, I dunno. The dictionary explicity defines “commute” as travelling from your home to your work - apparently the word comes from “commutation ticket”, the old name for a monthly travel pass, because the pass commutes (i.e. definition number 2C “replace (an annuity or other series of payments) with a single payment”) your daily ticket costs into a single payment.
Don’t want to give the ending away.
Etymology, you so crazy.
I read this as “the school you go to” which is just the same of course! Thank you @QuackingShoe!
Page 91
この 四つの 音から なる メロディーは、イギリスで うまれました。
This four note melody was born in England.
Note: なる meaning “to consist of” rather than “to become”
首都ロンドンの 中心部に、ウェストミンスター宮殿と いう、国会ぎじどうに あたる たてものが あります。
In the heart of the capital London, attached to the national parliament building (called the Palace of Westminster), there is a building.
I confess I’m not completely sure exactly what the から is doing…
How do you figure “attached to”? I was thinking something along the lines of “which serves as the Houses of Parliament” (Another word that I don’t quite get - which of the umpteen definitions of あたる even fits here?)
I thought the から made sense as “made up from four notes”.
You are probably right on あたる: “Which serves as the national parliament building”, or Jisho definition number 9 - “to be assigned”.
In the heart of the capital London, there is a building which is assigned as the national parliament building, called the Palace of Westminster.
I was thinking “attached” in the sense of ‘there is a building attached to the Palace of Westminster called Big Ben’. But looking ahead I don’t think that’s where the passage is going.
I should hope not. Big Ben is the bell that chimes the hour. The tower is Elizabeth Tower, though admittedly it’s only had that name since 2012 - prior to that it was just “the clock tower on the Houses of Parliament”.
Technically it’s the name of the bell but in real life most people call the tower Big Ben.