Mass Book For Children Here's a delightful way to introduce your little ones to Jesus in the Eucharist. With its captivating writing style and charming art, The Mass Book for Children not only teaches young children the parts of the Mass but also shows them why joining in the joyful gathering is an experience of love. Entertaining and educational, The Mass Book for Children is perfect for the home or classroom. For children preschool to 9 years old. 48 pages.