Math Monday: Multiplication Ring

 3's
If math is made of patterns, than the Multiplication Ring is a fantastic visual! 
The concept is very simple; a ring with numbers 0-9 equally spaced that when wound with string, can show the shape of multiplication families.
(Note: Once you reach double digits, it's the last digit that counts 12=2, 15=5, 18=8 and so on...)

 4's
 5's
 
 7's
2's & 8's
9's

EXPAND ON MULTIPLICATION RINGS
How to Make the Multiplication Ring. https://www.youtube.com/watch?v=9yEgF3kqzmg