\documentclass[12pt]{article}


\usepackage{graphicx}

\usepackage{edXpsl}


\begin{document}



\begin{edXcourse}{8.01x}{Mechanics}[url_name="2015_Spring" start="2015-04-21"]

\begin{edXchapter}{Illustrative Sequences}

\begin{edXsection}{Collisions}

\begin{edXsequential}

%%%%%%%%%%%%%%%%%%%%
\begin{edXproblem}{Example E-text page}{10}

\section{Collisions}  

This is some example text, which will be included in course.xml as a
HTML file.

It may include graphics.

\includegraphics[width=6in]{example-image}

\end{edXproblem}

%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%%

\end{edXsequential}

\end{edXsection}
\end{edXchapter}
\end{edXcourse}
