That’s such an important concern. The article at https://gentaur.co.uk/learning/sunburn-how-to-play-safely-in-the-sun/ addresses that too. It explains how children’s skin is even more vulnerable to UV rays and gives advice on using SPF clothing, child-safe sunscreens, and how to teach kids about reapplying sunscreen. It also recommends preparing schools and camps with simple sun safety checklists.