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diff --git a/src/content/chapter0_basics/lesson04_ints/code.gleam b/src/content/chapter0_basics/lesson04_ints/code.gleam
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+import gleam/io
+import gleam/int
+
+pub fn main() {
+  // Int arithmetic
+  io.debug(1 + 1)
+  io.debug(5 - 1)
+  io.debug(5 / 2)
+  io.debug(3 * 3)
+  io.debug(5 % 2)
+
+  // Int comparisons
+  io.debug(2 > 1)
+  io.debug(2 < 1)
+  io.debug(2 >= 1)
+  io.debug(2 <= 1)
+
+  // Equality works for any type
+  io.debug(1 == 1)
+  io.debug(2 == 1)
+
+  // Standard library int functions
+  io.debug(int.max(42, 77))
+  io.debug(int.clamp(5, 10, 20))
+}
diff --git a/src/content/chapter0_basics/lesson04_ints/text.html b/src/content/chapter0_basics/lesson04_ints/text.html
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+<p>Gleam's <code>Int</code> type represents whole numbers.</p>
+<p>
+  There are arithmetic and comparison operators for ints, as well as the
+  equality operator which works on all types.
+</p>
+<p>
+  When running on the Erlang virtual machine ints have no maximum and minimum
+  size. When running on JavaScript runtimes ints are represented using
+  JavaScript's 64 bit floating point numbers,
+</p>
+<p>
+  The
+  <a href="https://hexdocs.pm/gleam_stdlib/gleam/int.html"
+    ><code>gleam/int</code></a
+  >
+  standard library module contains functions for working with ints.
+</p>