what is this で in front of はなした doing?


In my textbook, there are instructions for a composition. These instructions
are the following: こんど、国際交流協会で座談会があります。テーマは「文化や習慣の違い」です。
下のことについて、みんなで座談会の観衆尾をしましょう。

Then, a list of further specifying instructions follows, specifying various
topics to talk about. One of them is the following:

で話したことをまとめてメールで送りましょう It is this で at the very beginning which I have never
seen so far ^^ Mostly because I've never seen particles taking the lead
position in a sentence xD Here's my attempt at translation. => "Please send
the talked about things all in one piece with E-mail."

EDIT: Since some asked for more context, I uploaded a scan of the full
exercise. <https://www.docdroid.net/hBn7YgR/1.pdf> Its number 5, チャレンジしましょう.




Now that you posted the link to the PDF, it's obvious that
友達や先生に１）で話したことをまとめてメールで送りましょう means "Let's send emails to your friends and
teacher about what you discussed in #1". The で is marking section #1 as where
the discussion took place.




Now that you posted the link to the PDF, it's obvious that
友達や先生に１）で話したことをまとめてメールで送りましょう means "Let's send emails to your friends and
teacher about what you discussed in #1". The で is marking section #1 as where
the discussion took place.

