When it comes time to put your pieces into your portfolio, you may be wondering whether or not you should photocopy your assignments and examples from projects, or if you should use the originals. This is really up to your teacher to decide, and if they don't have an opinion on it, then you can make the choice for yourself. If you're planning to use the portfolio for more than just your grade, then you should consider using some originals. If you do use photocopies, make sure that the quality of the copies are just as good as the originals, and keep the originals somewhere safe in case you ever need them.
If your teacher is giving you some creative flexibility with your portfolio, then there are many student portfolio ideas out there that you can use for inspiration. While a first grader, a fifth grader and a high schooler may all have different ideas and abilities when it comes to making a portfolio, there's no reason you can't have fun with it as long as your teacher says it's okay.