Each weekly problem set consists of two pieces: a set of drill exercises from the text book and a set of required exercises. Some of the required exercises are project exercises; you will only get the full benefit of the course by solving all of those project exercises and maintaining their solutions over the entire course.

The drill exercises are recommended so that you understand the ideas from the weekly readings. Solving this problems---in DrScheme, not just on paper and pencil---will give you the required fluency in "the HtDP teaching languages" to solve the required exercises. Think of them as guide posts on the recommended path through the book.

The required exercises are those that you turn in. During the first lab, you will receive instructions on how to submit this required exercises via the Subversion server.