I just want to "brag" that my son is asking what is inside of practically everything now. He has so far been able to see what's inside of a VHS tape, a DVD/VCR player, a Honda car's dashboard, and a door knob. (The car dashboard is a piece my husband got at a junkyard for him. He's fascinated with MPH, RPM, etc.)

From what I've read, (Ruf) this isn't something children do until they are typically in second or third grade.