In this four-part activity, learners explore light and sound through a variety of hands-on investigations. First, learners explore sound waves and observe how sound can travel through other materials. Next, learners explore light waves and use prism glasses to determine which colors (wavelengths or frequencies) of light are in natural light. Then, learners use colored plastic to filter out certain wavelength and control the colors they see. Finally, learners create hidden messages using their knowledge of filters and light. This lesson guide is part of a "Passport to Chemistry Adventure" kit, but the kit is not necessary to facilitate these activities.