%% 
%%  An UIT Edition example
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%%  Example 01-03-2 on page 11.
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%%  Copyright (C) 2012 Vo\ss 
%% 
%%  It may be distributed and/or modified under the conditions
%%  of the LaTeX Project Public License, either version 1.3
%%  of this license or (at your option) any later version.
%% 
%%  See http://www.latex-project.org/lppl.txt for details.
%% 

% Show page(s) 1,2

%% ==== 
\PassOptionsToClass{}{beamer}
\documentclass{exabeamer}
\usepackage[utf8]{inputenc}
\usepackage{mathabx}

%\StartShownPreambleCommands
\documentclass{beamer}
%\StopShownPreambleCommands

\begin{document}
\begin{frame}{Negative example}
\begin{center}
\begin{itemize}
 \item Make the font too large rather than too small. For example, don't use this {\tiny
    font size}; nobody in the back row will be able to read it even if they try.
 \item[$\bigoasterisk$] Have at most ten lines per slide. A slide with just a single line can
    also make sense.
{\raggedleft
\begin{itemize}
 \item Allow \emph{one} line to show \emph{each} fact.
 \item Don't \emph{fill} slides with text to save space.
  \item Use white space as a means of layout.
 \end{itemize}}
  \item Give clear separation between the slide title and slide text.
  \item Have at most one subtitle.
\end{itemize}
\end{center}
\end{frame}
\begin{frame}{Positive example}
\begin{itemize}\parskip=1.5ex
 \item[\Large$\blacktriangleright$] Make the font too large rather than too small like this: {\tiny font size}.
 \item[\Large$\blacktriangleright$] A single line can make sense.
 \item[\Large$\blacktriangleright$] Allow \emph{one} line to show \emph{each} fact.
 \item[\Large$\blacktriangleright$] Don't \emph{fill} slides with text to save space.
  \item[\Large$\blacktriangleright$] Use white space as a means of layout.
  \item[\Large$\blacktriangleright$] Give clear separation between the slide title and slide text.
  \item[\Large$\blacktriangleright$] Have at most one subtitle.
\end{itemize}
\end{frame}
\end{document}