Elenco Circuit Maker Skill Builder 125 Projects using PHOTORESISTORS, CAPACITORS, TRANSISTORS and ICs Enjoy hours of educational fun learning about electronics while developing analytical and problem solving skills Snap together electrical components provide students ages 8+ with hands-on experience designing and building models of working electrical circuits 32 component modules - Clear and concise illustrated manual included and available online Founded more than 40 years ago by 2 engineers, Elenco's goal is to provide children with great products that offer a hands-on experience and hours of creative playtime. With designs rooted in engineering, Elenco toys captivate and educate kids of all ages.