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
Through the placement of the single digit multiplication facts within the first quadrant of the Cartesian coordinate system connections between arithmetic and calculus become visible. Consider the similarities between the product as the area of a 5 by 6 rectangle and the area under the curve of the constant function, f(x) = 6, over the […]
The Evolution of the Multiplication Table