Sometimes the most successful path is simplicity~
This video greatly assists in learning to count by 2s - 12s , By starting off slow and gradually increasing the speed, this video helps students learn skip counting, thus providing better results with multiplication skills.
Try the counting by 3 video for free and see how it works! You can also access it at this link: https://www.youtube.com/watch?v=ifAxpzcnM0U
Videos are wmv files, but can also be accessed with a private youtube link.