It has long been the case that mosaics have been used by schools. They are most often used for quite young children, of junior school age, however even older children can get a lot out of the simple but fulfilling hobby.
Mosaic making is above all else an art form. Therefore, it can form a valuable part of an art lesson. This is even suitable for older children who wish to experiment with different mediums. Of course go back to ancient times and mosaic making was considered a high art, which can be seen in wonderful places like Pompeii.
Speaking of ancient history and mosaic making can form a valuable part of history lessons. Children, especially if they’re younger, learn very well if they’re allowed a hands-on experience. Working with mosaics can be an interesting, intuitive way to learn.
There is essentially no limit to what you can learn through the medium of mosaics. For instance you could help to develop children’s IT skills. To explain you can possibly have children create their designs on computer which can then be made in real life using mosaics.