\documentclass{article}
\usepackage[a4paper]{geometry} 
\usepackage[dutch]{babel}
\usepackage{amsmath, amssymb, textcomp, graphicx,hyperref}
\usepackage{graphicx}
\usepackage{subcaption}
\usepackage{pdfpages}
\usepackage{wrapfig}

\begin{document}
	\title{\LaTeX course week 4, exercises}
	\author{\TeX niCie\\ Committee of  \mbox{A--Es}kwadraat}
	\maketitle

\section{Find the differences}
A few more pictures for a little more exercise.
\begin{figure}[h]
\centering
\includegraphics[scale = 0.5]{plotje.png}
\caption{Not like this...}
\label{fig:Ugly}
\end{figure}
\begin{figure}[h]
\centering
\includegraphics[scale = 0.5]{plotje.pdf}
\caption{But like this}
\label{fig:Nice}
\end{figure}\\
\section{Presentations}
Copy the presentation on the site. Also try some other nice options, make for instance a handout. As always, WikiBooks tot the rescue! \url{http://en.wikibooks.org/wiki/LaTeX/Presentations}.
\section{A-Eskwadraat}
First try to install the packages, for downloads and instructions, see \url{https://www.a-eskwadraat.nl/Vereniging/Commissies/hektex/}.\\
On the site there is a minutes, a letter and an invoice, try to reproduce these.
\section{Bonus!}
The theory of this exercise has not been covered in the presentations, but is in the manual.
\begin{figure}[h!]
        \centering
        \begin{subfigure}[h]{0.3\textwidth}
        		\includegraphics[width=\textwidth]{gamma.jpg}
                \caption{This looks horrible!}
                \label{fig:horrible}
        \end{subfigure}
        \begin{subfigure}[h]{0.3\textwidth}
        		\includegraphics[width=\textwidth]{gamma.png}
                \caption{Ugh...}
                \label{fig:ugly}
        \end{subfigure}
        \begin{subfigure}[h]{0.3\textwidth}
         		\includegraphics[width=\textwidth]{gamma.pdf}
                \caption{That's how we want it}
                \label{fig:nice}
        \end{subfigure}
        \caption{Find the differences. Also try to zoom in!}\label{fig:pictures}
\end{figure}
\end{document}