Hours of educational fun while learning about electronics. All parts are mounted on plastic modules and snap together with ease. 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. Includes 30 parts, and instructions for over 100 projects Requires 2 "AA" batteries (sold separately 70-3201-00) Clear and concise illustrated manual included.