## The Lesson and the Meta-lesson

In class there's the lesson about a specific formula, sure, but the meta-lesson is how well the experience went. What worked? What didn't? How can we get more of the first and less of the second?

## Einstein’s Theory of Special Relativity (MetaLearn Podcast)

I had another great chat with Nasos Papadopoulos on the wonderful MetaLearn podcast. Einstein’s Theory of Special Relativity has many consequences, including the famous equation E = MC² (Energy = Mass x Speed of Light²) and the notion that space and time are relative (observers can have different experiences of how large something is, or how much time elapsed).

## Quick Insight: Intuitive Meaning of Division

While working on some math colorizations I ran across some interpretations of division.

Multiplication can be repeated addition, scaling, rotating (via imaginary numbers), and more.

What about division? Let's take a look.

## It’s Time For An Intuition-First Calculus Course

**Summary:** I'm building a calculus course from the ground-up focused on *permanent intuition*, not the cram-test-forget cycle we've come to expect.
Interested? Sign up for the [mailing list](http://betterexplained.com/articles/betterexplained-email-list/) to get news about the pilot, launching early August. The learning principles below will guide its development.

## Finding Unity in the Math Wars

I usually avoid current events, but recent [skirmishes](http://devlinsangle.blogspot.com/2012/07/cant-we-all-get-along.html) in the math world prompted me to chime in. To recap, there've been heated discussions about math education and the role of online resources like Khan Academy.

## Sign Up for the BetterExplained Email List

Hi all! I’m starting an email list for BetterExplained readers and everyone interested in deep, intuitive learning. Sign up with the form below...

## Site Update: Ahas and FAQs for articles

I've just added a new feature to the site: an Aha / FAQ section for each article.
You can add an aha! moment or question, and vote / discuss them individually. This extends [aha.betterexplained.com](http://betterexplained.com/articles/share-your-insights-aha-betterexplained-com-beta/), making mini-posts for key ideas in an article.