diff --git a/src/math/__init__.py b/src/math/__init__.py
new file mode 100644
index 0000000..e69de29
diff --git a/src/math/slope.py b/src/math/slope.py
new file mode 100644
index 0000000..3cc4c28
--- /dev/null
+++ b/src/math/slope.py
@@ -0,0 +1,15 @@
+'''
+Created on Dec 20, 2016
+
+@author: klaehn
+'''
+
+import numpy as np
+
+def calc_slope(x, y, x_dist):
+    """
+    Calculate the slope of a curve given by x and y arrays. The x_distance
+    gives the start and end point for the slope.
+    Returns x and y arrays of the slope
+    """
+    return