When looking around, I noticed that there were a few teaching resources for the CRAP/CARP design principles (contrast, repetition, alignment and proximity), but most of them were made for middle and high school students.
I therefore created a poster intended for elementary students, although it probably can be used by any age. I think it’s important that we develop visual communication skills early on, as there’s really no reason for students not to learn them. Humanity shouldn’t have to wait until middle school for students to be effective visual communicators.
CARP Infographic for Elementary (Quality PDF)