Note: This is a message that was originally created by Mikkel Nannan on November 16, 2011. It is copied from the old system for your reference:

Once again I find myself procrastinating SO I made a notebook file that allows you to grab the toothpicks that are horizontal and those that are vertical and move them around to show that they need to be calculated separately. This was helpful for those students that don't understand what multiplying really is.