diff --git a/education/math/MATH1210 (calc 1)/Derivatives.md b/education/math/MATH1210 (calc 1)/Derivatives.md
index 580a6e0..680b0b4 100644
--- a/education/math/MATH1210 (calc 1)/Derivatives.md	
+++ b/education/math/MATH1210 (calc 1)/Derivatives.md	
@@ -37,6 +37,9 @@ Given the equation $y = f(x)$, the following are all notations used to represent
 # Higher Order Derivatives
 - Take the derivative of a derivative
 
+# Constant Rule
+The derivative of a constant is always zero.
+
 # Exponential Derivative Formula
 Using the definition of a derivative to determine the derivative of $f(x) = x^n$, where $n$ is any natural number.
 
@@ -91,4 +94,4 @@ $$ \dfrac{d}{dx}(\dfrac{f(x)}{g(x)}) = \dfrac{f'(x)g(x) -f(x)g'(x)}{(g(x))^2}  $
 # Exponential Rule
 $$ \dfrac{d}{dx} e^x = e^x $$
 $$ \dfrac{d}{dx}a^x = a^x*(\ln(a)) $$
-for all $a > 0$
\ No newline at end of file
+for all $a > 0$