> If you're 6, your parents just put you on the seat and push you until your balance gets good enough that you can take the training wheels off.
Which can take a very long time, because you have training wheels to begin with. If you're about to teach a kid how to ride a bicycle, it's far better to do without them. And the pedals too; learning how to use those is a huge distraction from learning to find and hold your balance.
There are special “kick bikes” for tiny tots to propel by kicking off the ground. And some of those can later be converted into “normal” bikes by attaching a chain drive, but... Feels kludgy, and is usually rather expensive.
If you can find an ordinary bike where you can get the saddle low enough for your kid to reach the ground with their feet, just remove the pedals and let them use that as a “kick bike”. If you can find a (gentle!) slope to practice on, you'll be able to replace the pedals in a matter of a few weeks at most, or probably days.
Which can take a very long time, because you have training wheels to begin with. If you're about to teach a kid how to ride a bicycle, it's far better to do without them. And the pedals too; learning how to use those is a huge distraction from learning to find and hold your balance.
There are special “kick bikes” for tiny tots to propel by kicking off the ground. And some of those can later be converted into “normal” bikes by attaching a chain drive, but... Feels kludgy, and is usually rather expensive.
If you can find an ordinary bike where you can get the saddle low enough for your kid to reach the ground with their feet, just remove the pedals and let them use that as a “kick bike”. If you can find a (gentle!) slope to practice on, you'll be able to replace the pedals in a matter of a few weeks at most, or probably days.