Please write one positive thing about this session and one thing that could be improved about this 4th session for a better learning experience.

A positive thing could be for example:
- one thing that you learned that you found useful, or
- one thing that you really liked about the material covered/ the session/ or the course.

A point for improvement could be for example:
- one question you still have about the material covered, or
- one subject that you’re confused about, or
- one suggestion to improve this session/course.

See more examples here https://datacarpentry.org/images/stickynote.jpg