# Interactive Mathematics

## Math Lessons

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### Explore math

Use interactive apps to explore math and get a better understanding of what it all means. Go ahead - play and learn!

There's over 300 easy to understand math lessons.

### What users say...

- After going through "intmath", I am able to derive calculus formulas by myself. (
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*JL*)

### Latest articles

#### Double springs interactive graph

The revised double spring applet now allows exploration on mobile devices. Here is some background... more »

#### Frequency of notes on a piano - interactive learning object

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

#### New applet: What does *b* do in a quadratic function?

*y*=

*ax*

^{2}+

*bx*+

*c*is a parabola. Changing the variables

*a*and

*c*are fairly simple, but what does

*b*actually change, and by how much?.. more »

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