~maryrosecook

A cool tool that lets you manipulate the starting amount, growth rate, and number of periods of a graphed exponential to visualize its properties. — Mai

Mary wrote a little Lisp and then annotated the source code. If you've never written an interpreter for a programming language before, this is a great place to start. — davidbalbert

A video of Mary livecoding a drum machine. You can also run the code live, and read the annotated source. — davidbalbert

A 6,000-word deep dive that explains the innards of how Git works. — nicholasbs

A tiny JavaScript game engine. — davidbalbert

A live programming environment for making games. It supports running code in both directions: forward and reverse. — davidbalbert

This is a clear explanation of functional programming concepts using Python and practical examples. — rachel

Gitlet is an implementation of Git in JavaScript. It's a wonderful example of building a project with the intention of learning. — jollysonali