Tree in slide with pause for each node

Question

I have a slide with some text and I want to add a tree under them.

something like the gif below.

The pause for each node is really not important but if possible, it will be much better. and is there possible to change forest size?

I tried this code but tree exceed the page size:

\documentclass{beamer}
\usepackage{forest}
\usetikzlibrary{arrows.meta}
\usepackage{lipsum}

\begin{document}
\begin{frame}[fragile]{Introduction}
    \begin{itemize}
        \setlength\itemsep{1em}
        \item \lipsum[1][1-5]
        \item \lipsum[1][1-5]
    \end{itemize}
    \begin{figure}
        \begin{forest}
            for tree = {
                circle, 
                draw, 
                edge = {-Straight Barb, semithick},
                l sep=8mm, 
                s sep=15mm, 
                minimum size = 3em,
                EL/.style 2 args = {edge label={%
                        node[midway, font=\footnotesize, align=center,
                        inner sep=2pt, anchor=south #1]{#2}},
                },
            }
            [Outlook,
            [Humidity, EL={east}{sunny}
            [Play, EL={east}{H $\leq$ 75}]
            [Don't play, EL={west}{H > 75}]
            ]
            [Play, EL={east}{Overcast}]
            [Wind, EL={west}{Raining}
            [Play, EL={east}{weak}]
            [Don't play, EL={west}{strong}]
            ]
            ]
        \end{forest}
    \end{figure}
\end{frame}
\end{document}

Answer 1

• Scaling forests has been asked before at Scale of a {forest} tree

• to pause between the nodes, you can use the solution from https://tex.stackexchange.com/a/112471/36296

• use \usepackage[T1]{fontenc} if you want to actually see the >-signs in your document

\documentclass{beamer}
\usepackage[T1]{fontenc}
\usepackage{forest}
\usetikzlibrary{arrows.meta}
\usetikzlibrary{overlay-beamer-styles}
\usepackage{lipsum}

\forestset{
  visible on/.style={
    for tree={
      /tikz/visible on={#1},
      edge+={/tikz/visible on={#1}}}}}

\begin{document}
\begin{frame}[fragile]
    \frametitle{Introduction}
    \begin{itemize}
        \setlength\itemsep{1em}
        \item \lipsum[1][1-5]
        \item \lipsum[1][1-5]
    \end{itemize}
    \begin{figure}
        \scriptsize
        \begin{forest}
            for tree = {
                ellipse, 
                draw, 
                edge = {-Straight Barb, semithick},
                l sep=1.5em, 
                s sep=2.5em, 
                minimum width=6em,
                EL/.style 2 args = {edge label={%
                        node[midway, font=\tiny, align=center,
                        inner sep=2pt, anchor=south #1]{#2}},
                },
            }
            [Outlook
            [Humidity, visible on=<2->, EL={east}{sunny}
            [Play, visible on=<3->, visible on=<3->, EL={east}{H $\leq$ 75}]
            [Don't play, visible on=<4->, EL={west}{H > 75}]
            ]
            [Play, visible on=<5->, EL={east}{Overcast}]
            [Wind, visible on=<6->, EL={west}{Raining}
            [Play, visible on=<7->, EL={east}{weak}]
            [Don't play, visible on=<8->, EL={west}{strong}]
            ]
            ]
        \end{forest}
    \end{figure}
\end{frame}
\end{document}