Thanks for all the response, looks like writing is something I should work on. Is there any specific resource that worked for you?
Hi again. We recently bought several grades' worth of workbooks in the "Daily 6-Trait Writing" series, like
this first-grade one. They seem to be decent so far in my non-expert opinion. They include a range of different tasks, asking a child to focus on things like sentence structure, adding useful detail through use of specific words, etc. And of course your son would get lots of physical writing practice doing the exercises.
