Snap Circuits Jr. SC-100 Electronics Explorer Kit by Elenco is a hands-on STEM kit that teaches the fundamentals of electronics through colorful snap-together components and a full-color project manual guiding users through over one hundred projects; the kit includes more than thirty color-coded parts such as a motor, photoresistor, integrated circuits, and a snap-on battery holder; no tools or soldering are required and it runs on two AA batteries (not included), making it ideal for classroom use or at-home exploration for children eight and up.