Tune in to science and your local radio station with this fun Snap Circuits kit! Simply snap special electronic blocks onto a grid to construct a functional FM radio. Adjust the volume of the speaker with a resistor that controls the amount of signal that goes through a power amplifier. Three other projects can be explored with the materials in this kit: a power amplifier, an electronic kazoo, and a “trombone.” An instruction guide is included with detailed directions and diagrams. Three AA batteries are required and available separately.