A portfolio is often regarded as a collection of facts and documents that testify teachers’ professional development and achievements. In some cases, it is considered as an important part of the career, where the teacher must present the work planned for certain periods, including the reflection on commitments which he/she has accomplished.
And how would a teacher do that if they didn’t track their progress? Obviously: by self-reflecting and completing the resources used for reflection. Do you have any journal notes that you think should be included? Great! Or have you gotten some really nice pieces of feedback from your students and colleagues? Even better! Make your portfolio a showcase of your personal growth and draw from your self-reflection process both in personal and professional life.