This numbers dice: 6 Face 90mm in size is made out of PVC, making it classroom durable and washable. Additionally, dice suited to a range of mathematics and educational games.This large PVC dot dice is easily visible by a group of children in the classroom. The size makes it perfect for a class activity.The material ensures it lands silently when thrown to avoid loud noises in the classroom caused by rolling the dice. This makes it also perfect to use in a classroom by a smaller group of students, while other students can be working on other projects. Many uses for maths exercises with the faces having the numbers 1-6 on the faces. Ages 3+ years.