Elenco Electronics Snap Circuits Sound Kit, 13 /14inH x 20inW x 19 1/2inD, Grades 3-12

Create more than 185 projects that demonstrate the principles of sound More than 185 fascinating projects teach children how sound is made and heard. Clear illustrations guide budding engineers through projects. Snap-together parts require no tools for easy assembly. Includes over 40 parts and a manual. Requires 4 AA batteries (sold separately).