Free LessonsHigh SchoolHigh School, Middle SchoolAbsorption and Transmission of LightElementary School, High School, Middle SchoolBake Fluorescent Cupcakes!High School, Middle SchoolColor Absorption and Reflection with M&M’sElementary School, High School, Middle SchoolDIY Smart Phone MicroscopeHigh School, Middle SchoolEstimate the sugar content of an unknown liquidHigh SchoolGiant Cylinder Challenge!Elementary School, High School, Middle SchoolHologram in your hand!High School, Middle SchoolIntroducing Fiber OpticsHigh SchoolInvisibility for Muggles!High School, Middle SchoolKinesthetic Model of RefractionHigh SchoolLight as Energy – Fluorescence and the Photoelectric EffectHigh School, Middle SchoolLight as Energy: PhotosynthesisHigh School, Middle SchoolMeasure the speed of light with a chocolate barHigh SchoolMeasure the wavelength of LASERHigh SchoolMeasure the Width of Human HairHigh SchoolProperties of Laser Light: CoherentHigh SchoolProperties of Laser Light: CollimatedHigh SchoolProperties of Laser Light: MonochromaticHigh SchoolSpeed of Light Experiment with Gelatin and a Laser!High School, Middle SchoolWaterdrop MicroscopeHigh SchoolWhite Board Geometric Optics Kit Guide