Build over 300 exciting projects with this classic kit! Snap Circuits® makes learning electronics easy and fun! Just follow the colorful pictures in our manual to build exciting projects such as AM radios, burglar alarms, doorbells, and much more! You can even play electronic games with your friends. All parts are mounted on plastic modules and snap together with ease. Enjoy hours of educational fun while learning about electronics. No tools required.Includes Projects 1-305 manuals (includes all of the SC-100 projects and 200 new ones). Features: Contains over 60 Snap-Together parts. Electrical components provide students ages 8+ with hands-on experience designing and building models of working electrical circuits. Snap-Together parts require no tools and ensure correct connections. Requires 4 "AA" batteries (not included) Clear and concise illustrated manual included and available online.