Matter has mass and takes up space. With this exciting kit, students explore the relationship of mass and volume using a spring scale and hook weights and observations. Enhance your current science curriculum with these innovative lesson supplements. Each kit of materials contains everything you need to tackle a variety of hands-on activities focusing on a specific subject of science study. Easily integrated into any program, these inquiry-based learning kits are ideal for science centers, enrichment, or take home explorations. All Tackling Science Kits include a student science journal, reusuable laminated student guide, and all activity supplies packaged in a stackable tackle box. Grades 2-4.