Ana,
Yes! We might even call this activity a "reflection journal", because thinking about the days activity, ways class could have improved, ideas about making the class better next go aroiund - these are example of reflection. And when we reflect we are putting our own thoughts into a record that only we will look at. And perhaps, we become a little bit better at what we do each time we contemplate how we can make things better for ourselve and our students.
Barry Westling