diff --git a/experiment-descriptor.json b/experiment-descriptor.json
new file mode 100644
index 0000000..0f0798c
--- /dev/null
+++ b/experiment-descriptor.json
@@ -0,0 +1,60 @@
+{
+  "unit-type": "lu",
+  "label": "",
+  "basedir": ".",
+  "units": [
+    {
+      "unit-type": "aim"
+    },
+    {
+      "target": "theory.html",
+      "source": "theory.md",
+      "label": "Theory",
+      "unit-type": "task",
+      "content-type": "text"
+    },
+    {
+      "target": "objective.html",
+      "source": "objective.md",
+      "label": "Objective",
+      "unit-type": "task",
+      "content-type": "text"
+    },
+    {
+      "target": "pretest.html",
+      "source": "pretest.json",
+      "label": "Pretest",
+      "unit-type": "task",
+      "content-type": "assesment"
+    },
+    {
+      "target": "procedure.html",
+      "source": "procedure.md",
+      "label": "Procedure",
+      "unit-type": "task",
+      "content-type": "text"
+    },
+    {
+      "target": "simulation.html",
+      "source": "simulation/index.html",
+      "label": "Simulation",
+      "unit-type": "task",
+      "content-type": "simulation"
+    },
+    {
+      "target": "posttest.html",
+      "source": "posttest.json",
+      "label": "Posttest",
+      "unit-type": "task",
+      "content-type": "assesment"
+    },
+    {
+      "target": "references.html",
+      "source": "references.md",
+      "label": "References",
+      "unit-type": "task",
+      "content-type": "text"
+    }
+  ]
+}
+
diff --git a/experiment/aim.md b/experiment/aim.md
index 2d4ae55..e20063a 100644
--- a/experiment/aim.md
+++ b/experiment/aim.md
@@ -3,9 +3,5 @@
 A coil spring, also known as a helical spring, is a mechanical device that is typically used to store energy and subsequently release it, absorb shock, or maintain a force between surfaces in contact. They are made of an elastic material formed into the shape of a helix, which returns to its natural length when unloaded.
 
 
-**Objective**
-
-To determine the deflection, stiffness & strain energy of a coiled spring. 
-
 
 
diff --git a/experiment/objective.md b/experiment/objective.md
new file mode 100644
index 0000000..355a5d7
--- /dev/null
+++ b/experiment/objective.md
@@ -0,0 +1 @@
+- To determine the deflection, stiffness & strain energy of a coiled spring.