...I am told to use the textbooks the school designated. So I have to make new exercises... exercises made by the textbook publishers ... are a little too difficult ...
1) simplify the exercises from the publishers, instead of starting over.
2) use those publisher exercises, but instead of simplifying, add enough easier exercises to adjust the overall level.
3) same as 2, but remove the hardest questions (or separate them for "extra credit").
4) start an online group with teachers who you know are using the same book(s)
**. Share your materials and invite others to do the same. Depending on how many teachers there are, work in pairs and rotate--one pair does exercises for Polestar II Lesson 1 Part 1, the next pair works on Part 2, etc.
5) send this group/collaborative work to the Polestar publisher, and ask them to distribute a link to it to the teachers using the book. OR, do this on your own, with other teachers in your prefecture/city.
** Use google docs to share. You and a partner can edit, and share with others. Others can collaborate (co-edit) and share with you (and others).
If the same book is used the following year, everyone will have a head start. The second year you all could add to and enhance what you'd done the first time.
Also, I think it is pretty easy to set up a "sub" on Reddit, for discussion--you, and other teachers using Polestar. These "subs" can be relatively private--by invitation only, posts can be 'moderated' (only visible after being approved), etc.
And so on...! :emoji_blush:
There are other teachers out there that feel the same as you do, and who are also working on their own exercises (I hope!). All of you need to get connected and start sharing.