diff --git a/img/postazioni-lavoro.jpg b/img/postazioni-lavoro.jpg
new file mode 100644
index 0000000..5bf0216
Binary files /dev/null and b/img/postazioni-lavoro.jpg differ
diff --git a/img/sala-corsi.jpg b/img/sala-corsi.jpg
new file mode 100644
index 0000000..09da536
Binary files /dev/null and b/img/sala-corsi.jpg differ
diff --git a/img/stampante-3d.jpeg b/img/stampante-3d.jpeg
deleted file mode 100644
index 2bab4db..0000000
Binary files a/img/stampante-3d.jpeg and /dev/null differ
diff --git a/img/stampante-3d.jpg b/img/stampante-3d.jpg
new file mode 100644
index 0000000..10ede55
Binary files /dev/null and b/img/stampante-3d.jpg differ
diff --git a/img/trashware-ricambi.jpg b/img/trashware-ricambi.jpg
new file mode 100644
index 0000000..5254713
Binary files /dev/null and b/img/trashware-ricambi.jpg differ
diff --git a/presentazione.tex b/presentazione.tex
index 9bddf6a..26d4bf1 100644
--- a/presentazione.tex
+++ b/presentazione.tex
@@ -167,29 +167,44 @@
     \frametitle{Cosa abbiamo: Officina Informatica}
 
     \begin{columns}
-        \begin{column}{.3\linewidth}
+        \begin{column}{.25\linewidth}
             \includegraphics[width=\textwidth]{img/oi-giorno.jpeg}
             \centering
             $ 46 m^{2} $
         \end{column}
-        \begin{column}{.3\linewidth}
-            \includegraphics[width=\textwidth]{img/stampante-3d.jpeg}
+        \begin{column}{.25\linewidth}
+            \includegraphics[width=\textwidth]{img/sala-corsi.jpg}
+            \centering
+            sala corsi
+        \end{column}
+        \begin{column}{.25\linewidth}
+            \includegraphics[width=\textwidth]{img/trashware-ricambi.jpg}
+            \centering
+            ricambi pc
+        \end{column}
+        \begin{column}{.25\linewidth}
+            \includegraphics[width=\textwidth]{img/postazioni-lavoro.jpg}
+            \centering
+            postazioni
+        \end{column}
+    \end{columns}
+    \begin{columns}
+        \begin{column}{.25\linewidth}
+            \includegraphics[width=\textwidth]{img/stampante-3d.jpg}
             \centering
             stampante 3D
         \end{column}
-        \begin{column}{.3\linewidth}
+        \begin{column}{.25\linewidth}
             \includegraphics[width=\textwidth]{img/arcieri.jpeg}
             \centering
             semafori
         \end{column}
-    \end{columns}
-    \begin{columns}
-        \begin{column}{.3\linewidth}
+        \begin{column}{.25\linewidth}
             \includegraphics[width=\textwidth]{img/obbrobrio.jpeg}
             \centering
             computer inusuali
         \end{column}
-        \begin{column}{.3\linewidth}
+        \begin{column}{.25\linewidth}
             \includegraphics[width=\textwidth]{img/antenna.jpeg}
             \centering
             apparati di rete