Exercises at end of book vs in the middle.?

Question

I am writing an educational book. I have created a few exercises that will be at the end of each chapter.

There are a few exercises I have that can stand on their own. They give potential for greater growth, so I wanted to highlight them at the end.

I was wondering how I should refer to them? Do I call them Exercise 10, Exercise 11, and such or instance? This is assuming my last chapter exercise is Exercise 9.

It will probably be a small book, maybe 50 pages. So should I put the final exercises in an appendix?

I'm mainly wondering what I should call them. They are visualization related.

Answer 1

Sounds like an interesting book.  Nothing wrong with adding a final chapter named Extra Exercises and included whatever else you want..