# Interactive Mathematics

## Math Lessons

## Algebra

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## Graphs

## Trigonometry

## Imaginary

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## Higher Calculus

## Math Art and Code

### 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...

- It's helpful and very clearly understandable. (
*Rohith*) - I have revised Fourier series from here and all my doubts were clear (
*Jayesh*) - The interactive graphs make the concepts accessible to my students. (
*April*)

### Latest articles

#### Units: Calories and kilograms

How many calories? and the way the kilogram was defined has been in place since 1799. It recently got a makeover. .. more »

#### Spiral around a hyperboloid - the Effekt bridge

#### Infinite series background

Infinite series have played an important role in the development of mathematics, especially calculus. Here's some background to some applets I wrote recently... more »

### Popular classics

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