I'm not sure such a thing exists, but IMO just get them using a regular keyboard from the get go (maybe even DVORAK) so they learn it young.

Are they learning to Type, or touch-type?

If it is just to basically find their way around then a smaller keyboard is probably OK,

But if they are learning to Touchtype, a Full sized keyboard with plenty of Travel will help much more with getting their speed up... ( a smaller keyboard will cause to many incorrect keystrokes at speed)

I learned on a Commodore 64 and turned out OK 

wellygary:

 

Are they learning to Type, or touch-type?

 

If it is just to basically find their way around then a smaller keyboard is probably OK,

 

But if they are learning to Touchtype, a Full sized keyboard with plenty of Travel will help much more with getting their speed up... ( a smaller keyboard will cause to many incorrect keystrokes at speed)

 

i have no idea what touch type is but that's what the mrs is planning to get him to learn

In a nutshell, touch typing is when you use all fingers and don't look at the keyboard while typing.

Our kid has never had an issue and has used computers since a young age (he is 9 now but could touch type ~7).  

As far as I know all keyboards since practically forever have roughly the same spacing - I don't think there is such a thing as a "Children's keyboard" only miniature keyboards with rubber keys upon which you cannot really type at all...

ubergeeknz: maybe even DVORAK

Oh come on, if you're going to be evil then at least do it properly with a Type 7!

At least the Type 7 has the caplock out of the way and a control key in a handy space!

PhantomNVD: TBH I'd say touch SCREEN typing will probably prove far more useful as time goes on... think tablet vs PC vs phablet ...?

you mean dictation without lifting a finger? that would be more futuristic, not to mention translation of brain waves into words ...