Perhaps there may be some benefit in the physical process of coloring in. (I don't know. I'm agnostic on this, and won't bother looking into it.)
But I still think that coloring in worksheets for academic subjects like math are a complete waste of time. For example this
"fun coloring math" homework (color the pieces of the puzzle green where the sum of the numbers = 9 etc to figure out the hidden animal)
You could have an online version where you simply click in the appropriate regions. (If it really had to be done on paper, a quick scribble in each section should be sufficient.) Preferably if the child can easily do the pure math task they should be allowed to proceed rapidly onwards until they reach something challenging. Education needs to be
efficient. There is no legitimate place for all this mind-crushing busywork.
