diff --git a/tutorials/robot-marbles-part-5/robot-marbles-part-5.ipynb b/tutorials/robot-marbles-part-5/robot-marbles-part-5.ipynb
index 84ceb4db..d927b2fe 100644
--- a/tutorials/robot-marbles-part-5/robot-marbles-part-5.ipynb
+++ b/tutorials/robot-marbles-part-5/robot-marbles-part-5.ipynb
@@ -9,7 +9,7 @@
     "To expand upon our previous examples, we will introduce the concept of using a graph network object that is updated during each state update. The ability to essential embed a graph 'database' into a state is a game changer for scalability, allowing increased complexity with multiple agents or components is represented, easily updated. Below, building upon our previous examples, we will represent the Robots and Marbles example with n boxes, and a variable number of marbles. \n",
     "\n",
     "## Behavior and Mechanisms:\n",
-    "* A network of robotic arms is capable of taking a marble from their one of their boxes and dropping it into the other one. \n",
+    "* A network of robotic arms is capable of taking a marble from one of their boxes and dropping it into the other one. \n",
     "* Each robotic arm in the network only controls two boxes and they act by moving a marble from one box to the other.\n",
     "* Each robotic arm is programmed to take one marble at a time from the box containing the most significant number of marbles and drop it in the other box. It repeats that process until the boxes contain an equal number of marbles.\n",
     "* For our analysis of this system, suppose we are only interested in monitoring the number of marbles in only their two boxes."
diff --git a/tutorials/videos/robot-marbles-part-5/robot-marbles-part-5.ipynb b/tutorials/videos/robot-marbles-part-5/robot-marbles-part-5.ipynb
index 761bd349..5855f9b8 100644
--- a/tutorials/videos/robot-marbles-part-5/robot-marbles-part-5.ipynb
+++ b/tutorials/videos/robot-marbles-part-5/robot-marbles-part-5.ipynb
@@ -12,7 +12,7 @@
     "To expand upon our previous examples, we will introduce the concept of using a graph network object that is updated during each state update. The ability to essential embed a graph 'database' into a state is a game changer for scalability, allowing increased complexity with multiple agents or components is represented, easily updated. Below, building upon our previous examples, we will represent the Robots and Marbles example with n boxes, and a variable number of marbles.\n",
     "\n",
     "## Behavior and Mechanisms:\n",
-    "* A network of robotic arms is capable of taking a marble from their one of their boxes and dropping it into the other one.\n",
+    "* A network of robotic arms is capable of taking a marble from one of their boxes and dropping it into the other one.\n",
     "* Each robotic arm in the network only controls two boxes and they act by moving a marble from one box to the other.\n",
     "* Each robotic arm is programmed to take one marble at a time from the box containing the most significant number of marbles and drop it in the other box. It repeats that process until the boxes contain an equal number of marbles.\n",
     "* For our analysis of this system, suppose we are only interested in monitoring the number of marbles in only their two boxes."