Curated OER
AM I on the Radio?
Young scholars create a working radio by soldering circuit components supplied from an AM radio kit. They demonstrate an efficient soldering technique, identify the circuit components used to construct their radio, and explain how their...
Curated OER
Riding the Radio Waves
Students examine the basic concepts of radio waves and magnetic fields. They study how the AM radios are built and demonstrate the concepts of amplitude and frequency.
Curated OER
The AM Radio: An Exploration of Communication Using Radio Waves
Students examine the components that are used to make a primitive AM radio. In circuit and radio construction students often are asked to assemble parts are or what function they perform. They examine each main component on an individual...
Curated OER
AM to FM - Lesson 4
Students examine different music styles played on AM radio versus FM radio. They compare a 1972 music hit from AM radio with a 1972 hit album on FM radio.
PBS
Pbs Learning Media: How Is a Radio Wave Emitted?
This illustrated essay from A Science Odyssey Web site explains the science behind radio waves, including the role of electrons and electromagnetic fields.
PBS
Pbs: Who Made America?: Innovators: Edwin Armstrong
This brilliant engineer advanced both AM and FM radio, turning them into viable broadcast technologies, and innovated military radio uses in two World Wars.
NASA
Nasa: Electromagnetic Spectrum: Radio Waves
Radio waves have the longest wavelengths in the electromagnetic spectrum. This NASA article discusses AM, FM, TV, cell phone, as well as radio astronomy, which all use this technology.