Density Sink or Float Lab Activity | Scientific Method STEM Experiment Looking for a high-engagement, low-prep density experiment your students will actually understand? This Sink or Float Density Lab Activity is a hands-on elementary science experiment that teaches density, buoyancy, properties of matter, and the scientific method using simple classroom materials. Perfect for NGSS-aligned science lessons, STEM activities, inquiry-based learning, and homeschool science.Students will investig