Discover how lights, alarms, motors, switches and more work, all while building fun projects. With E-Blox you can build 3D circuits directly into your brick structures, so they can come to life with light, sound or motion! Compatible with other popular brick products, they offer a great addition to any STEM program. Classroom set features 264 total pieces, plus curriculum and instruction manuals. Kids can build 395 different projects, including a working FM radio, light-activated sirens, flying fan and more. Comes with four battery modules that each require 3 AA batteries (sold separately). For ages 8 and up. Ships directly from the manufacturer, please allow 1-3 weeks for delivery.