I’ve seen these paper snowflakes done in school and they are really effective and look fantastic. They probably do need lots of adult supervision as they are quite fiddly and it’s very easy to make a mistake. However, the finished product is really impressive and they look great for decorating the classroom during the seasonal period.
Experiment with the types of paper used (copier paper, thicker paper, sugar paper etc.) and with different sizes and colours of paper. You will see great results.