Apologia: Physicsl Science Chemistry Intro.

The Physical Science class officially begsn a chemistry unit with inorganic ionic nomenclature, Flinn Scientific's Putting the Ions in Their Hands.  The kit I purchased through Flinn came with the ions printed on red and blue card stock.  So, I copy the cations or positive ion sheet on red card stock and the anions, negative ions, on blue card stock.  I usually draw a red cat with a big plus sign and a blue ant with a large negative sign to help kids remember how to differentiate between cations and anions.
IonicFormula Writing Video is a brief video of the activity.