Reliable mental math skills lead to a lifetime of pleasure, enjoyment, and successful critical work. The XY Chart™ brings together two fundamental visual tools—the 10 x 10 multiplication table and the Cartesian coordinate system—in a natural way that makes learning them easy. Traditional multiplication tables organize the numbers in ascending order from top to bottom, […]
The X•Y Chart: multiplication and graphing. A better tool.
What is The X•Y Chart? The X•Y Chart™ is the 10 by 10 multiplication facts placed in the rectangular coordinate system.
For whom? Students of all ages learning mathematics.
When? As soon as counting to 10 is mastered.
Where? Classroom, bedroom, refrigerator door, school binder, or on any wall.
How? Display it boldly. Math is beautiful and it matters.
With The X•Y Chart, your child will:
- see that multiplication is repetitive addition so that memorization may begin.
- receive an early introduction to graphing by plotting points
- acquire a lively foundation for visualizing future advanced concepts in algebra, geometry, trigonometry, and even calculus.
From The Blog
“Cogito ergo sum” is the phrase that so many associate with Descartes. His work on the development of the coordinate system, however, deserves even more attention. Where would math be without it? The more I consider the usefulness of the coordinate system, the more valuable it appears.
Ferguson, Missouri is on edge, to put it mildly, and it would be helpful for President Obama to show some leadership before it explodes. In anticipation of a grand jury decision on whether to indict a white police officer in the August shooting death of a black teenager, Missouri Gov. Jay Nixon has declared a […]