Math Fact Triangles

Supriya likes to do math, both oral and on paper. I tried the addition triangle a while ago, but it did not stick. Now she is really getting it. Today I tried division with her as the inverse of multiplication, and she understood the concept. She worked with her abacus and that helped also. She could easily see that (4 times 3) is the same as (3 times 4). She could do (12 divided by 3) to get 4, but then had to again spend time figuring out that (12 divided by 4) is 3. These two operations also lead to their own type of triangle and that intrigued her as well.