This diffraction grating kit includes the components needed to build a spectrometer and explore the physics of wavelengths and wave interference using the Visual Scientifics system. The kit contains a laser, slide holder, two diffraction gratings (500 lines/mm and 1000 lines/mm), two Visual Scientifics posts, and a laboratory manual with student worksheet. The included manual describes experiments for demonstrating wave and particle duality and wavelength principles. Activities cover approximately 2-3 hours of classroom time and align with Common Core Standards and Next Generation Science Standards. The Visual Scientifics Magnetic Base (PHVSBASE) is required but sold separately.