Chris of Mixing Memory has a must read post up about the normal distribution. The man did the tedious work of encoding mathematical notation and symbolism into HTML, so he should take a bow.
More like this
In my Dembski rant, I used a metaphor involving the undescribable numbers. An interesting confusion came up in the comments about just what that meant. Instead of answering it with a comment, I decided that it justified a post of its own.
Polymathematics has posted another excellent essay on the subject of whether .9999...repeating equals one.
Recently, I was talking about vectors. At that time, I had to stop and recall how I had been representing vectors.
That should be added to the "Basics" list.