Here is a 1-5 day unit on electromagnetic radiation that features a teacher guide and student activities with extensions.

Learn about the coupling of an electric field with a magnetic field to create electromagnetic waves in this video. Video also discusses how different types of electromagnetic waves have different wavelengths which forms the electromagnetic spectrum. [11:01]

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Students are introduced to sound energy concepts and how engineers use sound energy. Through hands-on activities and demonstrations, students examine how we know sound exists by listening to and seeing sound waves. They learn to describe sound in terms of its pitch, volume and frequency. They explore how sound waves move through liquids, solids and gases. They also identify the different pitches and frequencies, and create high- and low-pitch sound waves.

In this very detailed lesson plan from NASA, students investigate wavelength and frequency within the electromagnetic spectrum.

Student groups rotate through four stations to examine light energy behavior: refraction, magnification, prisms and polarization. They see how a beam of light is refracted (bent) through various transparent mediums. While learning how a magnifying glass works, students see how the orientation of an image changes with the distance of the lens from its focal point. They also discover how a prism works by refracting light and making rainbows. And, students investigate the polar nature of light using sunglasses and polarized light film.

Lucianne Walkowicz shows us the waves just beyond our perception: microwaves, radio waves, x-rays and more. [5:58]