Explore piano note frequencies in this interactive learning object, combining trig graphs and exponential growth.

y = ax² + bx + c is a parabola. Changing the variables a and c are fairly simple, but what does b actually change, and by how much?

This interactive applet allows you to explore the concepts of domain and range for several different mathematical functions.

Self-taught mathematician and astronomer Benjamin Banneker excelled despite little formal education and prejudice.

Here we solve another graph mystery - what is the correct domain for y = sec(arccos(x))? And why do different software packages show similar, but different graphs?

The Manga Guide to Regression Analysis continues the tradition of presenting math through comics. Here's my review.

I was humbled this week to receive notice that SquareCirclez (the IntMath Blog) has been included in a list of the "Top 100 Math Blogs".

The fascinating Map to Multiplication may not be all it seems, notwithstanding its cleverness.

This 3D planes applet allows you to explore the concept of geometrically solving 3 equations in 3 unknowns.

This interactive applet allows you to explore the concept of slicing a cone by a plane at various angles and positions, resulting in conic sections.