Interlock is a hands-on program for children in preschool and kindergarten. The lessons are already planned and presentation techniques are given. Covering Creation through the Flood, Interlock sets the stage for a solid foundation in biblical knowledge.

As each aspect of Creation is studied biblically, application is made to the physical, created world in which the child lives. Subjects such as social studies, science, language arts, math, health, art, physical education, memory work, and music are all integrated into the Bible lessons. A music tape is also included with the program. Words to the songs are provided within the Interlock Binder. Interlock's resource section is filled with patterns for manipulatives and pages for supplementing the lessons. A complete supply list is also included, with general supplies needed for the curriculum and specific supplies needed for various weeks. Designed to be taught three days a week, you can dedicate the other two days to phonics and field trips.