# It's Learning Time

All the best lectures, notes, classes, educational junk, etc.

Keywords: Mathematics, Physics, Quizzes

## About StumbleDNA ListDNA

## Math Fun Facts: All Fun Facts

There are currently 203 Fun Fact files. You can also see a list of .

## Unsolved Problems - Wolfram Demonstrations Project

Explore thousands of free applications across science, mathematics, engineering, technology, business, art, finance, social sciences, and more.

## Unsolved Problems -- from Wolfram MathWorld

There are many unsolved in mathematics. Some prominent outstanding unsolved problems (as well as some which are not necessarily so well known) include

## Motion Mountain - The Free Physics Textbook for Download...

Motion Mountain is a free and entertaining physics textbook - 6 volumes with more than 2000 pages - for young students, teachers and anybody interested in physics. The text, guaranteed to be fascinating, surprising and challenging on every page, is...

## PatrickJMT

Just another WordPress weblog

## How many words do you know?

I've just received my Word Score, an estimate of the total number of words I know. How many words do you know?

## Web Equation

Write your equation and get your result in laTeX or in MathML

## Numberphile - Videos about Numbers and Stuff

Short videos about numbers, maths and all sorts of other numbery stuff. We'll make you love numbers!

## Physics Flash Animations

We have been increasingly using animations for illustrating Physics content. This page provides access to those animations which may be of general interest. The animations will appear in a separate window.

## Personal and Historical Perspectives of Hans Bethe

IN 1999, legendary theoretical physicist Hans Bethe delivered three lectures on quantum theory to his neighbors at the Kendal of Ithaca retirement community (near Cornell University). Given by Professor Bethe at age ...