Reflecting is a great way for students to learn and grow. Looking back on their month is a way for students to see all that they've accomplished, things that challenged them, and look forward to the next month.
This resource comes with monthly reflections (two pages for each month, one with a boy and one with a girl). It also includes a writing prompt for each month. Students can reflect on their month and provide a writing sample to show how they grow throughout the year. The writing prompts include two versions. One version includes lines and room for them to illustrate a picture. The second version is just writing lines.
I personally keep these in a folder with prongs and hand them out at the end of each month for the kids to write their reflections and writing samples. I then send the entire folder home at the end of the year as a keepsake. You could also print them off month by month and send them home as they finish.