diff --git a/Module 4 - Exercise 1 Flowcharting - Rosie Val.drawio b/Module 4 - Exercise 1 Flowcharting - Rosie Val.drawio
new file mode 100644
index 0000000..3bb4c4e
--- /dev/null
+++ b/Module 4 - Exercise 1 Flowcharting - Rosie Val.drawio	
@@ -0,0 +1,132 @@
+<mxfile host="draw.io">
+  <diagram id="guessing_game" name="Ch3 Ex6 - Number Guessing Game (1-100)">
+    <mxGraphModel dx="1422" dy="762" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1169" pageHeight="827" math="0" shadow="0">
+      <root>
+        <mxCell id="0" />
+        <mxCell id="1" parent="0" />
+
+        <!-- TITLE -->
+        <mxCell id="100" value="Ch. 3, Exercise 6 — Guessing a Number Between 1 and 100&#xa;Programmer: Rosie Val" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=13;fontStyle=1;" vertex="1" parent="1">
+          <mxGeometry x="170" y="760" width="500" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- START -->
+        <mxCell id="2" value="Start" style="ellipse;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;fontStyle=1;fontSize=11;" vertex="1" parent="1">
+          <mxGeometry x="305" y="20" width="140" height="40" as="geometry" />
+        </mxCell>
+
+        <!-- PROCESS: Generate random number -->
+        <mxCell id="3" value="Generate a random number&#xa;between 1 and 100" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="250" y="100" width="250" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- PROCESS: Initialize counter -->
+        <mxCell id="4" value="numGuesses = 0" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="250" y="190" width="250" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- I/O: Output prompt -->
+        <mxCell id="5" value='Output: "Guess a number between 1 and 100"' style="shape=parallelogram;perimeter=parallelogramPerimeter;whiteSpace=wrap;html=1;fixedSize=1;size=15;" vertex="1" parent="1">
+          <mxGeometry x="250" y="280" width="250" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- I/O: Input guess -->
+        <mxCell id="6" value="Input: guess" style="shape=parallelogram;perimeter=parallelogramPerimeter;whiteSpace=wrap;html=1;fixedSize=1;size=15;" vertex="1" parent="1">
+          <mxGeometry x="250" y="370" width="250" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- PROCESS: Increment counter -->
+        <mxCell id="7" value="numGuesses = numGuesses + 1" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="250" y="460" width="250" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- DECISION 1: guess = number? -->
+        <mxCell id="8" value="guess = number?" style="rhombus;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="295" y="550" width="160" height="80" as="geometry" />
+        </mxCell>
+
+        <!-- I/O: Correct! -->
+        <mxCell id="9" value='Output: "Correct! You guessed&#xa;it in " + numGuesses + " tries!"' style="shape=parallelogram;perimeter=parallelogramPerimeter;whiteSpace=wrap;html=1;fixedSize=1;size=15;" vertex="1" parent="1">
+          <mxGeometry x="590" y="548" width="270" height="70" as="geometry" />
+        </mxCell>
+
+        <!-- STOP -->
+        <mxCell id="10" value="Stop" style="ellipse;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;fontStyle=1;fontSize=11;" vertex="1" parent="1">
+          <mxGeometry x="645" y="648" width="140" height="40" as="geometry" />
+        </mxCell>
+
+        <!-- DECISION 2: guess < number? -->
+        <mxCell id="11" value="guess &lt; number?" style="rhombus;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="295" y="670" width="160" height="80" as="geometry" />
+        </mxCell>
+
+        <!-- I/O: Too low -->
+        <mxCell id="12" value='Output: "Too low, try again"' style="shape=parallelogram;perimeter=parallelogramPerimeter;whiteSpace=wrap;html=1;fixedSize=1;size=15;" vertex="1" parent="1">
+          <mxGeometry x="20" y="685" width="230" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- I/O: Too high -->
+        <mxCell id="13" value='Output: "Too high, try again"' style="shape=parallelogram;perimeter=parallelogramPerimeter;whiteSpace=wrap;html=1;fixedSize=1;size=15;" vertex="1" parent="1">
+          <mxGeometry x="590" y="685" width="230" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- EDGES -->
+        <mxCell id="20" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="2" target="3" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="21" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="3" target="4" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="22" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="4" target="5" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="23" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="5" target="6" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="24" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="6" target="7" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="25" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="7" target="8" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 1: Yes → Correct output -->
+        <mxCell id="26" value="Yes" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="8" target="9" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Correct output → Stop -->
+        <mxCell id="27" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="9" target="10" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 1: No → Decision 2 -->
+        <mxCell id="28" value="No" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="8" target="11" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 2: Yes → Too low -->
+        <mxCell id="29" value="Yes" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="11" target="12" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 2: No → Too high -->
+        <mxCell id="30" value="No" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="11" target="13" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Too low → Input (loop back, left side) -->
+        <mxCell id="31" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="12" target="6" parent="1">
+          <mxGeometry relative="1" as="geometry">
+            <Array as="points">
+              <mxPoint x="5" y="395" />
+            </Array>
+          </mxGeometry>
+        </mxCell>
+        <!-- Too high → Input (loop back, right side) -->
+        <mxCell id="32" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="13" target="6" parent="1">
+          <mxGeometry relative="1" as="geometry">
+            <Array as="points">
+              <mxPoint x="845" y="395" />
+            </Array>
+          </mxGeometry>
+        </mxCell>
+
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>
diff --git a/Module 4 - Exercise 2 Flowcharting - Rosie Val.drawio b/Module 4 - Exercise 2 Flowcharting - Rosie Val.drawio
new file mode 100644
index 0000000..d55824f
--- /dev/null
+++ b/Module 4 - Exercise 2 Flowcharting - Rosie Val.drawio	
@@ -0,0 +1,108 @@
+<mxfile host="draw.io">
+  <diagram id="dictionary_lookup" name="Ch3 Ex7 - Looking Up a Word in the Dictionary">
+    <mxGraphModel dx="1422" dy="762" grid="1" gridSize="10" guides="1" tooltips="1" connect="1" arrows="1" fold="1" page="1" pageScale="1" pageWidth="1169" pageHeight="827" math="0" shadow="0">
+      <root>
+        <mxCell id="0" />
+        <mxCell id="1" parent="0" />
+
+        <!-- TITLE -->
+        <mxCell id="100" value="Ch. 3, Exercise 7 — Looking Up a Word in the Dictionary&#xa;Programmer: Rosie Val" style="text;html=1;strokeColor=none;fillColor=none;align=center;verticalAlign=middle;whiteSpace=wrap;rounded=0;fontSize=13;fontStyle=1;" vertex="1" parent="1">
+          <mxGeometry x="170" y="690" width="500" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- START -->
+        <mxCell id="2" value="Start" style="ellipse;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;fontStyle=1;fontSize=11;" vertex="1" parent="1">
+          <mxGeometry x="330" y="20" width="140" height="40" as="geometry" />
+        </mxCell>
+
+        <!-- I/O: Input word to find -->
+        <mxCell id="3" value="Input: word to look up" style="shape=parallelogram;perimeter=parallelogramPerimeter;whiteSpace=wrap;html=1;fixedSize=1;size=15;" vertex="1" parent="1">
+          <mxGeometry x="275" y="100" width="250" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- PROCESS: Open to middle page -->
+        <mxCell id="4" value="Open dictionary to the middle page" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="275" y="190" width="250" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- DECISION 1: Is word on this page? -->
+        <mxCell id="5" value="Is the word on&#xa;this page?" style="rhombus;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="320" y="280" width="160" height="80" as="geometry" />
+        </mxCell>
+
+        <!-- I/O: Word found -->
+        <mxCell id="6" value='Output: "Word found!"' style="shape=parallelogram;perimeter=parallelogramPerimeter;whiteSpace=wrap;html=1;fixedSize=1;size=15;" vertex="1" parent="1">
+          <mxGeometry x="600" y="295" width="210" height="50" as="geometry" />
+        </mxCell>
+
+        <!-- STOP -->
+        <mxCell id="7" value="Stop" style="ellipse;whiteSpace=wrap;html=1;fillColor=#dae8fc;strokeColor=#6c8ebf;fontStyle=1;fontSize=11;" vertex="1" parent="1">
+          <mxGeometry x="645" y="375" width="140" height="40" as="geometry" />
+        </mxCell>
+
+        <!-- DECISION 2: Word before this page? -->
+        <mxCell id="8" value="Does the word come&#xa;BEFORE words on&#xa;this page&#xa;(alphabetically)?" style="rhombus;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="295" y="400" width="210" height="110" as="geometry" />
+        </mxCell>
+
+        <!-- PROCESS: Open to middle of first half -->
+        <mxCell id="9" value="Open to the middle&#xa;of the FIRST half" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="20" y="545" width="240" height="60" as="geometry" />
+        </mxCell>
+
+        <!-- PROCESS: Open to middle of second half -->
+        <mxCell id="10" value="Open to the middle&#xa;of the SECOND half" style="rounded=0;whiteSpace=wrap;html=1;" vertex="1" parent="1">
+          <mxGeometry x="555" y="545" width="255" height="60" as="geometry" />
+        </mxCell>
+
+        <!-- EDGES -->
+        <mxCell id="20" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="2" target="3" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="21" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="3" target="4" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <mxCell id="22" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="4" target="5" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 1: Yes → Word found -->
+        <mxCell id="23" value="Yes" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="5" target="6" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Word found → Stop -->
+        <mxCell id="24" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="6" target="7" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 1: No → Decision 2 -->
+        <mxCell id="25" value="No" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="5" target="8" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 2: Yes → First half -->
+        <mxCell id="26" value="Yes" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="8" target="9" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- Decision 2: No → Second half -->
+        <mxCell id="27" value="No" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="8" target="10" parent="1">
+          <mxGeometry relative="1" as="geometry" />
+        </mxCell>
+        <!-- First half → Decision 1 (loop back, left side) -->
+        <mxCell id="28" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="9" target="5" parent="1">
+          <mxGeometry relative="1" as="geometry">
+            <Array as="points">
+              <mxPoint x="5" y="260" />
+            </Array>
+          </mxGeometry>
+        </mxCell>
+        <!-- Second half → Decision 1 (loop back, right side) -->
+        <mxCell id="29" style="edgeStyle=orthogonalEdgeStyle;html=1;" edge="1" source="10" target="5" parent="1">
+          <mxGeometry relative="1" as="geometry">
+            <Array as="points">
+              <mxPoint x="840" y="260" />
+            </Array>
+          </mxGeometry>
+        </mxCell>
+
+      </root>
+    </mxGraphModel>
+  </diagram>
+</mxfile>