diff --git a/AERO3220_HW4_block_diagram.md b/AERO3220_HW4_block_diagram.md
index 657c176..ef5cc5b 100644
--- a/AERO3220_HW4_block_diagram.md
+++ b/AERO3220_HW4_block_diagram.md
@@ -82,26 +82,26 @@ This version shows the same coupled dynamics using gain blocks and integrator tr
 
 ```mermaid
 flowchart LR
-    Z1[State z1] --> G11[Gain -k1 over m1]
+    Z1[State z1] --> G11[Gain -k1/m1]
     G11 --> S1[Sum z1ddot]
-    Z2[State z2] --> G12[Gain plus k1 over m1]
+    Z2[State z2] --> G12[Gain +k1/m1]
     G12 --> S1
-    S1 --> I11[Transfer block 1 over s]
+    S1 --> I11[Transfer block 1/s]
     I11 --> Z1D[State z1dot]
-    Z1D --> I12[Transfer block 1 over s]
+    Z1D --> I12[Transfer block 1/s]
     I12 --> Z1
 
-    U[Input force u] --> G2U[Gain 1 over m2]
+    U[Input force u] --> G2U[Gain 1/m2]
     G2U --> S2[Sum z2ddot]
-    Z1 --> G21[Gain k1 over m2]
+    Z1 --> G21[Gain k1/m2]
     G21 --> S2
-    Z2 --> G22[Gain minus k1 plus k2 over m2]
+    Z2 --> G22[Gain -(k1+k2)/m2]
     G22 --> S2
-    Z2D[State z2dot] --> G23[Gain minus b over m2]
+    Z2D[State z2dot] --> G23[Gain -b/m2]
     G23 --> S2
-    S2 --> I21[Transfer block 1 over s]
+    S2 --> I21[Transfer block 1/s]
     I21 --> Z2D
-    Z2D --> I22[Transfer block 1 over s]
+    Z2D --> I22[Transfer block 1/s]
     I22 --> Z2
 ```