I don't think you can start teaching coding before grammar. And without any arithmetic it's going to be a bit tricky to do any 'proper' coding. Although in the

I don't think you can start teaching coding before grammar. And without any arithmetic it's going to be a bit tricky to do any 'proper' coding. Although in the most abstract sense programming is just thinking about what effect a certain sequence of commands has. Like with all kinds of abstract reasoning it can be a good idea to encourage kids to play around with it. However it's possible that some kids aren't ready, or don't have the motivation, to learn those concepts; and forcing them will only make them hate it more. In that sense programming and mathematics should be considered the same.