Classroom Clicker is a great idea that will change classroom education forever, particularly in countries like Korea and Japan where classrooms are as interactive as TV is, meaning not at all. Like TV remotes, these clickers will let students change the channel.
The orange clicker is made by Hyper Interactive Teaching Technology from Arkansas. Dialpad-like clicker in the middle is made by GTCO CalComp of Maryland. Simplest looking blue clicker is made by eInstruction Corp. of Texas.