From their site:

First-School features free fun preschool lesson plans, educational early childhood activities, printable crafts,  worksheets, calendar of events and other resources for children of preschool age.  The preschool crafts, lesson plans and activities are appropriate and adaptable for toddlers, preschoolers and kindergarten level (ages 2 to 6).  

First-School's content is ideal for home schooling, preschool and kindergarten teachers, daycare, child care providers, after-school and babysitters.  Go here to learn more!