diff --git a/3.5mocha/index.html b/3.5mocha/index.html
new file mode 100644
index 0000000..adac1dd
--- /dev/null
+++ b/3.5mocha/index.html
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+<!DOCTYPE html>
+<html>
+<head>
+  <!-- add mocha css, to show results -->
+  <link rel="stylesheet" href="https://cdnjs.cloudflare.com/ajax/libs/mocha/3.2.0/mocha.css">
+  <!-- add mocha framework code -->
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/mocha/3.2.0/mocha.js"></script>
+  <script>
+    mocha.setup('bdd'); // minimal setup
+  </script>
+  <!-- add chai -->
+  <script src="https://cdnjs.cloudflare.com/ajax/libs/chai/3.5.0/chai.js"></script>
+  <script>
+    // chai has a lot of stuff, let's make assert global
+    let assert = chai.assert;
+  </script>
+</head>
+
+<body>
+
+  <script>
+    function pow(x, n) {
+      /* function code is to be written, empty now */
+      let result = 1;
+
+      for(let i = 0; i < n; i++){
+        result = result * x;
+      }
+
+      return result;
+    }
+  </script>
+
+  <!-- the script with tests (describe, it...) -->
+  <script src="test.js"></script>
+
+  <!-- the element with id="mocha" will contain test results -->
+  <div id="mocha"></div>
+
+  <!-- run tests! -->
+  <script>
+    mocha.run();
+  </script>
+</body>
+
+</html>
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diff --git a/3.5mocha/test.js b/3.5mocha/test.js
new file mode 100644
index 0000000..a52aa46
--- /dev/null
+++ b/3.5mocha/test.js
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+describe("pow", function(){
+    it("calculate the pow of the number", function(){
+        assert.equal(pow(2, 3), 8);
+    })
+
+    function maketest(x){
+        let expected = x * x * x;
+        it(`calculate ${x}^3`, function(){
+            assert.equal(pow(x, 3), expected);
+        })
+    }
+
+    for(let i = 1; i < 5; i++){
+        maketest(i);
+    }
+});
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