I make short, to-the-point online math tutorials. I struggled with math growing up and have been able to use those experiences to help students improve in math through practical applications and tips.

If you routinely take notes by hand on your mobile device, either with your finger or a stylus, you know how essential handwriting recognition apps can be for organization and legibility. These apps ...

A function is a relation such that for each \(x\)-value there is only one corresponding \(y\)-value. In other words, a function cannot contain two different ordered pairs with the same first ...

Tip — Counting Semitones: Each fret on a guitar (or each piano key including black keys) equals exactly 1 semitone. To find the interval, count the total semitones between two notes. 12 semitones ...

We will now see how the details of floating point arithmetic give us a means of performing \emph{computer-assisted proofs}, essentially turning the computer into a rigorous mathematician who can do ...

I am an author, futurist, systems architect, public speaker and pro blogger.

JavaScript is a great language. It has a simple syntax, large ecosystem and, what is most important, a great community. At the same time, we all know that JavaScript is quite a funny language with ...