When I was teaching, I used to search the internet at the last minute at times because I did not have a sufficient number of isometric sheets for the 4th rotation. Hence, I saved resources like this...and printed them as I needed them.
Students from 4th grade and up should become competent in drawing in three dimensions - it just takes some practice and they are good to go.
I made this up using MS Word - and put it through a Image processor - GIMP.
Nothing special...but it makes one's life just a little bit easier in the classroom.
Best of Luck!