Water Works is a field-tested physical science unit for high-ability learners in grades K-1. This unit engages students in scientific investigation as they closely observe and experiment with water. Students are transformed into scientists who notice, react to, reflect on, and discover more about force and change.The concept of change is reinforced while students explore the characteristics of items that sink and float, experiment to make objects float, and examine how materials interact with water. Water Works, a Project Clarion Science Unit for Primary Grades, utilizes a hands-on, constructivist approach that allows children to build their knowledge base and skills while they explore science topics through play and planned investigations.