The document provides an overview and instructions for using the EmbarK12 Comprehensive preschool curriculum. It includes 18 theme-based units containing hands-on and online activities. The curriculum blends more than 750 hands-on activities with 450 online activities for a total of about 288 hours of learning experiences. The Guides contain step-by-step instructions for implementing each activity and assessing learning. Users are encouraged to customize a schedule and learning plan to meet their child's needs and interests.