What a messed up 'kids activity'. I would rather my children play Halo or Call of Duty then participate in this mental screwing excercise. Kids who do this exercise, along with being exposed to all the other death at Armageddon images in the society's literature, wil have a seed planted deep in their minds that will grow into psychological disorders when they mature.
I know super zealous dubs who won't let their kids watch Madagascar or Kung-fu Panda or play Mariokart because of the violence. They can just do the dot to dots that the society puts out.
Don't forget to focus on the evil woman's dying eyes kids, notice her terror and pain, she has turned away from Jehovah and is now suffering horrific death. When you finish the dot to dot of death we can all sing 'Listen Obey And Be Blessed' together.
JWs feel they need to give their kids this divine education, or they could get corrupted by Satan, and that can really mess up a child's mind..