Have a look at this video and see the brilliance in it all - the way it makes a pattern, how everything connects! I have always worked with patterns when I taught math, that way you get a deeper understanding and I knew about the pattern in the time table for the number nine - how all the answers equals nine and so on. Enjoy this video - if you like please write me and tell me how you did it, what your students learned and what you learned - I would be delighted to know!!
Have fun and aim for skills of the 21st Century - with this you are well on your way!