One option might be to simplify but basically plaigerize from the clip
from the "Brady Bunch" Steven Colbert used on his show earlier this
week - the one in which one of the boys in the family, called on the
carpet by The Parents and critized for driving his friend's car
despite The Parents having instructed him not to drive his car,
defended his action on the ground that they had not told him he may
not drive someone else's car (that he had been forbidden to drive only
to drive his car).
If your 10 yr old 4th grader understands the 1st through 8th and the
10th amendments affirmatively to confer or confirm the conferring of
various substantive "rights" substantively, a perhaps semiotically
less uninteresting and "performance art" approach might be to hand in
a completely blank 8x10 piece of paper (as - but in an itself more
active rather than "reserved" manner, a 4th grader of my acquaintance
once did, on white paper, in depicting a snow blizzard).