\section{Methodology}
\label{sec:metho}

% This is a long section so we will break it into smaller subsections
\subsection{Old methodology}
\subsubsection{Introduction}
Introduce the old methodology.

\subsubsection{Drawbacks}
Why it did not really work.

\subsection{Our methodology}
$$
\frac{1}{2} = \alpha^\delta \times \omega_1 \times \omega_2 \cdots \omega_n
$$
In the above equation (we can refer to it by an identifier as well, Google it),
we can see that $xyz$.

Notice the labeling on the second line of this file, 
we can in fact refer to sections as Section~\ref{sec:metho}, for example.