A bit about terms: A resume is a one to two page document that summarizes one's academic progress, work experience, skills and related achievements. Resumes are used by job seekers in business, industry, government, and the nonprofit sector.
For job seekers in education, particularly those in higher education, a curriculum vitae or CV is needed. A CV has a multiple pages that documents one's academic preparation, positions held, courses taught, publications, presentations, and service activities.
A portfolio (either hard copy or electronic) contains multiple documents and examples of one's work. Depending on the discipline, the contents of a portfolio will vary. An educator, for example, will include a resume, syllabi, learning materials, and a philosophy of teaching statement. An artist, photographer or poet will includes representative samples of work.