The value of dimes varies directly with the number of dimes. This appears self-evident. That it can be expressed algebraically as v = md ought also to be obvious to intermediate algebra students. Yet it’s not. Why? Does anyone have an answer? I have been teaching direct and inverse variation in class this week and […]
After happily teaching Latin for two and one half years, I am now in my eighth month teaching algebra in an excellent college prep school. The importance of multiplication confronts me every day as I prepare for class. There is hardly a topic in algebra that does not require a knowledge of the single digit […]
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, […]
Piet Mondrian (1872-1944) – Was a Dutch painter and pioneer of abstract art. He lived in different places over the years including Paris, London, and New York. Mondrian developed a style of painting based on the use of simple geometric shapes and pure colors. Rectangles were the prominent shapes in his work. The X•Y […]