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+\documentclass[14pt]{classPres}
+\usepackage{tkz-fct}
+
+\author{}
+\title{}
+\date{}
+
+\begin{document}
+\begin{frame}{Questions flashs}
+    \begin{center}
+        \vfill
+        Terminale ST \\ Spé sti2d
+        \vfill
+        30 secondes par calcul
+        \vfill
+        \tiny \jobname
+    \end{center}
+\end{frame}
+
+\begin{frame}{Calcul 1}
+    \vfill
+    Soit $f(x) = \dfrac{1}{x}$,
+
+    \vfill
+    Calculer la taux de variation entre x = 1 et x = 2.
+
+    \vfill
+    \[
+        \frac{\Delta f}{\Delta x} = 
+    \]
+    \vfill
+\end{frame}
+
+\begin{frame}{Calcul 2}
+    \vfill
+    Soit
+    \vfill
+    \[
+        f(x) = (5x+2)\times \frac{1}{x}
+    \]
+    \vfill
+    Calculer
+    \vfill
+    \[
+        \frac{df}{dx} = 
+    \]
+    \vfill
+\end{frame}
+
+\begin{frame}{Calcul 3}
+    \vfill
+    Quelle est la valeur de $\sin(\vec{OI};\vec{OA})$?
+    \vfill
+    \begin{center}
+        \begin{tikzpicture}[scale=3]
+            \cercleTrigo
+            \foreach \x in {0,30,...,360} {
+                % dots at each point
+                \filldraw[black] (\x:1cm) circle(0.6pt);
+            }
+            \draw (60:1)  node [above right] {A}; 
+            \draw (0,0) -- (60:1);
+            \draw[->, very thick, red] (0.5,0) arc (0:60:0.5) ; 
+        \end{tikzpicture}
+    \end{center}
+    \vfill
+\end{frame}
+
+\begin{frame}{Fin}
+    \begin{center}
+        On retourne son papier.
+    \end{center}
+\end{frame}
+
+
+\end{document}