Strider style bikes (a.k.a. “pre-bikes”) without pedals or cranks are another option that teaches the basics of balance and steering. Usually kids are familiar enough with pedaling, thanks to big wheels, that it’s a pretty easy jump from these to a two wheeler.
Bart Gillespie: I am your average 37-year-old family guy who enjoys riding bikes. I just happen to have stuck with cycling long enough to get kind of good at it.
If you are going all-in and plan on having loads of kids, like me, purchasing an adjustable tandem might be the way to go. With our Co-Motion Periscope Torpedo (pictured), I am able to adjust it to fit my six year old daughter at 4’1” and my wife at 5’3”, due to the telescoping seatpost and stem.