\documentclass{beamer}
\title{Something by Peter Denning}
\author{Donald E. Knuth}
\institute{Cornell College}
\date{21 February 2020}

\usepackage{amsmath}
%%\usepackage{graphicx}
%%\usepackage[colorlinks=true]{hyperref}
\usepackage{listings}
\lstset{language=Python}

\setlength{\parskip}{12pt}

\usetheme{Dresden}

%% Try any of these themes:
%% AnnArbor
%% Antibes
%% Bergen
%% Berkeley
%% Berlin
%% Boadilla
%% CambridgeUS
%% Copenhagen
%% Darmstadt
%% Dresden
%% Frankfurt
%% Goettingen
%% Hannover
%% Ilmenau
%% JuanLesPins
%% Luebeck
%% Madrid
%% Malmoe
%% Marburg
%% Montpelier
%% PaloAlto
%% Pittsburgh
%% Rochester
%% Singapore
%% Szeged
%% Warsaw

\usecolortheme{dolphin}

%% Try any of these color themes:
%% albatross
%% beaver
%% beetle
%% crane
%% dolphin
%% dove
%% fly 
%% lily
%% orchid
%% rose
%% seagull
%% seahorse
%% whale
%% wolverine

\usefonttheme{default}

%% Try any of these font themes:
%% default
%% professionalfonts
%% serif
%% structurebold
%% structureitalicserif
%% structuresmallcapsserif

\begin{document}

\begin{frame}
  \titlepage
\end{frame}

\begin{frame}{Slide with sentences and paragraphs.}

Software engineers test software.
Testing is important.
However, while testing can reveal the presence of
defects, no amount of testing can ever prove
the absence of defects in software.

\end{frame}

\begin{frame}{Slide with bulleted list.}
\begin{itemize}
  \item name
  \item location (address)
  \item type
  \item value
  \item scope
  \item lifetime
  \end{itemize}
\end{frame}

\begin{frame}{Slide with a numbered list.}
\begin{enumerate}
  \item unit testing
  \item regression testing
  \item white box testing
  \item black box testing
  \end{enumerate}
\end{frame}

\begin{frame}{Slide with definitions.}
\begin{description}
  \item[selection sort] a simple sorting algorithm
  \item[insertion sort] a simple sorting algorithm
  \item[merge sort] a faster sorting algorithm
  \end{description}
\end{frame}

\begin{frame}{Slide with Mathematics}
\begin{align*}
  \gcd (a, b) & = \gcd( b, a \bmod b ) \\
  \gcd( a, 0 ) & = 0
  \end{align*}
\end{frame}

\begin{frame}[fragile]{Slide with Code}

  \begin{lstlisting}{}
  data = [ 1, 1, 2, 3, 5, 8, 13, 21 ]

  for n in data:
      print( n )
    \end{lstlisting}

\end{frame}

%%\begin{frame}{Slide with links.}
%%  To learn more\ldots
%%
%%  \begin{itemize}
%%    \item \href{https://www.computer.org/}{IEEE's Computer Society}
%%    \item \href{https://www.acm.org/}{ACM (Association for Computing Machinery%%)}
%%    \end{itemize}
%%  \end{frame}

\end{document}

