diff --git a/Code Along with verma/CodeAlong2.java b/Code Along with verma/CodeAlong2.java
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diff --git a/Code Along with verma/HelloWorld.java b/Code Along with verma/HelloWorld.java
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diff --git a/Code Along with verma/Scannertest.java b/Code Along with verma/Scannertest.java
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diff --git a/Code Along with verma/check.java b/Code Along with verma/check.java
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index 0000000..0e1052d
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+++ b/Code Along with verma/check.java	
@@ -0,0 +1,111 @@
+/* Write a class WordCheck that is supposed to check if words that are valid. A word is considered valid if it’s within the max and min limit range, and does not contain a certain string.
+Constructor that accepts 3 parameters, max and min length of a valid word, and a String that isn’t allowed in the words.
+Constructor that accepts 1 String parameter that isn’t allowed in the word; min and max lengths are defaulted to 5 and 12 in this case.
+Method isValid that accepts a String word and returns true if word is valid, false otherwise.
+An accessor method getValidCount that returns the number of valid words checked so far.
+Accessors and Mutators for max, min, String not allowed
+Example of class runs:
+WordCheck W1 = new WordCheck(4, 8, “$”);
+W1.isValid(“Hi”); //returns false as word is too short
+W1.isValid(“Hello”); //returns true as word is valid
+W1.isValid(“Hibernate”); //returns false as word is too long
+W1.isValid(“$Bills”); //returns false as word contains “$”
+W1.isValid(“Monday”); //returns true as word is valid
+W1.getValidCount(); //return 2 for two valid words so far
+WordCheck W2 = new WordCheck(“Meep”); //any words with length 5-12 and no occurrence of “Meep” will be valid for W2
+*/
+class WordCheck {
+
+    // instance var
+    private int max;
+    private int min;
+    private String NA;
+    private int validCount; // could be set to zero here instead of line 29
+    // create word checker tracking var that tracks # of word checkers made
+    public static int wordCheckCount = 0;
+
+    // first constructor
+    public WordCheck(int min, int max, String NA) {
+        this.max = max;
+        this.min = min;
+        this.NA = NA;
+        // this keyword point to copy of var, used for distingugh between params
+        this.validCount = 0;
+        wordCheckCount++;
+    }
+
+    public WordCheck(String NA) {
+        // one option
+        // this.min = 5;
+        // this.max = 12;
+        // this.NA = NA;
+        //  easier option
+        this(5, 12, NA);
+    }
+
+    public boolean isValid(String word) {
+        if (
+            word.length() >= min &&
+            word.length() <= max &&
+            word.indexOf(NA) == -1 /* can also use !word.contains(NA) */
+        ) {
+            validCount++;
+            return true;
+        }
+        return false;
+    }
+
+    // accessors & mutators, fancy way fo saying getters & setters
+    public int getMax() {
+        return this.max;
+    }
+
+    public void setMax(int m) {
+        this.max = m;
+    }
+
+    public int getMin() {
+        return this.min;
+    }
+
+    public void setMin(int m) {
+        if (this.max > m) {
+            this.min = m;
+        }
+    }
+
+    public String getNA() {
+        return this.NA;
+    }
+
+    public void setNA(String no) {
+        this.NA = no;
+    }
+
+    public int getValidCount() {
+        return this.validCount;
+    }
+}
+
+public class check {
+
+    public static void main(String args[]) {
+        WordCheck W1 = new WordCheck(4, 8, "$");
+        System.out.println(W1.isValid("Hi")); //returns false as word is too short
+        System.out.println(W1.isValid("Hello")); //returns true as word is valid
+        System.out.println(W1.isValid("Hibernate")); //returns false as word is too long
+        System.out.println(W1.isValid("$Bills")); //returns false as word contains “$”
+        System.out.println(W1.isValid("Monday")); //returns true as word is valid
+        System.out.println(W1.getValidCount()); //return 2 for two valid words so far
+        WordCheck W2 = new WordCheck("Meep"); //any words with length 5-12 and no occurrence of “Meep” will be valid for W2
+
+        WordCheck W3 = new WordCheck(2, 12, "$");
+        System.out.println(W3.isValid("Meow"));
+        System.out.println(W3.isValid("$3"));
+        System.out.println(W3.isValid("Cats meow"));
+        System.out.println(W3.isValid("Dogs bark"));
+        System.out.println(W3.getValidCount());
+        WordCheck W4 = new WordCheck("meow");
+        System.out.println(WordCheck.wordCheckCount);
+    }
+}
diff --git a/Code Along with verma/code2.java b/Code Along with verma/code2.java
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index 0000000..6b19199
--- /dev/null
+++ b/Code Along with verma/code2.java	
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+import java.lang.Math;
+
+public class code2 {
+
+    public static void main(String[] args) {
+        // Prints "Hello, World" to the terminal window.
+        System.out.println("Hello, World");
+        // 5 random ints
+        int a = (int) (Math.random() * (10 - 1 + 1) /* range size */ + 1);
+        int b = (int) (Math.random() * (10 - 1 + 1) + 1);
+        int c = (int) (Math.random() * (10 - 1 + 1) + 1);
+        int d = (int) (Math.random() * (10 - 1 + 1) + 1);
+        int e = (int) (Math.random() * (10 - 1 + 1) + 1);
+        System.out.println(a + b + c + d + e);
+        // create a array of ints
+        int numlist[] = new int[5]; // declared new list and intialized with size of 5
+        System.out.println(numlist); // prints memory
+        int sum = 0;
+        for (int i = 0; i < numlist.length; i++) {
+            numlist[i] = (int) (Math.random() * (10) + 1);
+            System.out.println(numlist[i]); // prints the list
+            sum += numlist[i]; // adds each var to sum each time loop runs
+        }
+        System.out.println(sum);
+        System.out.println(numlist.length); // lgnth is an attr not method
+        // arrayss have one attr and no methods
+
+        //arrays of strings
+        // String names[] = new String[]; / array are static data type
+        // dimesion missing
+        String names[] = { "alice", "esther", "emma", "lily", "branden" }; //declaration, instationation, initialzation in one step
+        System.out.println(names[1]);
+        System.out.println(names[names.length - 1]); //last value/index in list
+        // properly format names
+        for (int i = 0; i < names.length; i++) {
+            System.out.println(
+                names[i].substring(0, 1).toUpperCase() +
+                    names[i].substring(1).toLowerCase()
+            );
+        }
+
+        //traverse backqrds and print names that are more than 3 letters long
+        for (int i = names.length - 1; i >= 0; i--) {
+            if (names[i].length() > 3) {
+                System.out.println(names[i]);
+            }
+        }
+        //traverse and print only names with letter "a" in it
+        for (int i = 0; i < names.length; i++) {
+            if (names[i].indexOf("a") >= 0) {
+                System.out.println(names[i]);
+            }
+        }
+        // for each loop is a simple loop just for traversal
+        // access one element at a time in a temp placeholder
+        for (String s : names) {
+            System.out.println(s);
+        }
+    }
+}
diff --git a/README.md b/README.md
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diff --git a/U1/Assignment1.java b/U1/Assignment1.java
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diff --git a/U1/L1/U1_L1_Activity_One .java b/U1/L1/U1_L1_Activity_One .java
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diff --git a/U1/L1/U1_L1_Activity_Three.java b/U1/L1/U1_L1_Activity_Three.java
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diff --git a/U1/L1/U1_L1_Activity_Two .java b/U1/L1/U1_L1_Activity_Two .java
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diff --git a/U1/L2/U1_L2_Activity_One.java b/U1/L2/U1_L2_Activity_One.java
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diff --git a/U1/L2/U1_L2_Activity_Three.java b/U1/L2/U1_L2_Activity_Three.java
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diff --git a/U1/L2/U1_L2_Activity_Two.java b/U1/L2/U1_L2_Activity_Two.java
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diff --git a/U1/L3/U1_L3_Activity_One.java b/U1/L3/U1_L3_Activity_One.java
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diff --git a/U1/L3/U1_L3_Activity_Three.java b/U1/L3/U1_L3_Activity_Three.java
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diff --git a/U1/L3/U1_L3_Activity_Two.java b/U1/L3/U1_L3_Activity_Two.java
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diff --git a/U1/L4/U1_L4_Activity_Four.java b/U1/L4/U1_L4_Activity_Four.java
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diff --git a/U1/L4/U1_L4_Activity_One.java b/U1/L4/U1_L4_Activity_One.java
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diff --git a/U1/L4/U1_L4_Activity_Three.java b/U1/L4/U1_L4_Activity_Three.java
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diff --git a/U1/L4/U1_L4_Activity_Two.java b/U1/L4/U1_L4_Activity_Two.java
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diff --git a/U1/L5/U1_L5_Activity_One.java b/U1/L5/U1_L5_Activity_One.java
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diff --git a/U1/L5/U1_L5_Activity_Two.java b/U1/L5/U1_L5_Activity_Two.java
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diff --git a/U1/L6/U1_L6_Activity_One.java b/U1/L6/U1_L6_Activity_One.java
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diff --git a/U1/L6/U1_L6_Activity_Three.java b/U1/L6/U1_L6_Activity_Three.java
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diff --git a/U1/L6/U1_L6_Activity_Two.java b/U1/L6/U1_L6_Activity_Two.java
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diff --git a/U2/Assignment2.java b/U2/Assignment2.java
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index 0000000..f7d6720
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+++ b/U2/Assignment2.java
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+/* Assignment 2 - Control Tower */
+/* Class name - must be "Assignment2" in order to run */
+import assignment2.Airplane;
+import java.util.Scanner;
+
+public class Assignment2 {
+
+    public static void main(String[] args) {
+        Airplane plane1 = new Airplane();
+
+        Airplane plane2 = new Airplane("AAA02", 15.8, 128, 30000);
+
+        Scanner scan = new Scanner(System.in);
+        System.out.println(
+            "Enter the details of the third airplane (call-sign, distance, bearing and altitude):"
+        );
+
+        String callsign = scan.nextLine();
+        double distance = scan.nextDouble();
+        int bearing = scan.nextInt();
+        int altitude = scan.nextInt();
+
+        callsign = callsign.toUpperCase();
+
+        Airplane plane3 = new Airplane(callsign, distance, bearing, altitude);
+
+        System.out.println();
+        System.out.println("Initial Positions:");
+        System.out.println("\"Airplane 1\": " + plane1.toString());
+        System.out.println("\"Airplane 2\": " + plane2.toString());
+        System.out.println("\"Airplane 3\": " + plane3.toString());
+
+        System.out.println();
+        System.out.println("Initial Distances:");
+        double dist12 = plane1.distTo(plane2);
+        double dist13 = plane1.distTo(plane3);
+        double dist23 = plane2.distTo(plane3);
+
+        System.out.println(
+            "The distance between Airplane 1 and Airplane 2 is " +
+                Math.round(dist12 * 100.0) / 100.0 +
+                " miles."
+        );
+        System.out.println(
+            "The distance between Airplane 1 and Airplane 3 is " +
+                Math.round(dist13 * 100.0) / 100.0 +
+                " miles."
+        );
+        System.out.println(
+            "The distance between Airplane 2 and Airplane 3 is " +
+                Math.round(dist23 * 100.0) / 100.0 +
+                " miles."
+        );
+
+        System.out.println();
+        System.out.println("Initial Height Differences:");
+        int heightDiff12 = Math.abs(plane1.getAlt() - plane2.getAlt());
+        int heightDiff13 = Math.abs(plane1.getAlt() - plane3.getAlt());
+        int heightDiff23 = Math.abs(plane2.getAlt() - plane3.getAlt());
+
+        System.out.println(
+            "The difference in height between Airplane 1 and Airplane 2 is " +
+                heightDiff12 +
+                " feet."
+        );
+        System.out.println(
+            "The difference in height between Airplane 1 and Airplane 3 is " +
+                heightDiff13 +
+                " feet."
+        );
+        System.out.println(
+            "The difference in height between Airplane 2 and Airplane 3 is " +
+                heightDiff23 +
+                " feet."
+        );
+
+        plane1.gainAlt();
+        plane1.gainAlt();
+        plane1.gainAlt();
+
+        plane2.loseAlt();
+        plane2.loseAlt();
+
+        plane3.loseAlt();
+        plane3.loseAlt();
+        plane3.loseAlt();
+        plane3.loseAlt();
+
+        plane1.move(dist23, 65);
+        plane2.move(8.0, 135);
+        plane3.move(5.0, 55);
+
+        System.out.println();
+        System.out.println("New Positions: ");
+        System.out.println("\"Airplane 1\": " + plane1.toString());
+        System.out.println("\"Airplane 2\": " + plane2.toString());
+        System.out.println("\"Airplane 3\": " + plane3.toString());
+
+        System.out.println();
+        System.out.println("New Distances:");
+        dist12 = plane1.distTo(plane2);
+        dist13 = plane1.distTo(plane3);
+        dist23 = plane2.distTo(plane3);
+
+        System.out.println(
+            "The distance between Airplane 1 and Airplane 2 is " +
+                Math.round(dist12 * 100.0) / 100.0 +
+                " miles."
+        );
+        System.out.println(
+            "The distance between Airplane 1 and Airplane 3 is " +
+                Math.round(dist13 * 100.0) / 100.0 +
+                " miles."
+        );
+        System.out.println(
+            "The distance between Airplane 2 and Airplane 3 is " +
+                Math.round(dist23 * 100.0) / 100.0 +
+                " miles."
+        );
+
+        System.out.println();
+        System.out.println("New Height Differences:");
+        heightDiff12 = Math.abs(plane1.getAlt() - plane2.getAlt());
+        heightDiff13 = Math.abs(plane1.getAlt() - plane3.getAlt());
+        heightDiff23 = Math.abs(plane2.getAlt() - plane3.getAlt());
+
+        System.out.println(
+            "The difference in height between Airplane 1 and Airplane 2 is " +
+                heightDiff12 +
+                " feet."
+        );
+        System.out.println(
+            "The difference in height between Airplane 1 and Airplane 3 is " +
+                heightDiff13 +
+                " feet."
+        );
+        System.out.println(
+            "The difference in height between Airplane 2 and Airplane 3 is " +
+                heightDiff23 +
+                " feet."
+        );
+    }
+}
diff --git a/U2/L1/U2_L1_Activity_One.java b/U2/L1/U2_L1_Activity_One.java
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diff --git a/U2/L1/U2_L1_Activity_Two.java b/U2/L1/U2_L1_Activity_Two.java
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diff --git a/U2/L2/U2_L2_Activity_One.java b/U2/L2/U2_L2_Activity_One.java
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diff --git a/U2/L2/U2_L2_Activity_Three.java b/U2/L2/U2_L2_Activity_Three.java
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diff --git a/U2/L2/U2_L2_Activity_Two.java b/U2/L2/U2_L2_Activity_Two.java
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diff --git a/U2/L3/U2_L3_Activity_Four.java b/U2/L3/U2_L3_Activity_Four.java
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diff --git a/U2/L3/U2_L3_Activity_One.java b/U2/L3/U2_L3_Activity_One.java
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diff --git a/U2/L3/U2_L3_Activity_Three.java b/U2/L3/U2_L3_Activity_Three.java
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diff --git a/U2/L3/U2_L3_Activity_Two.java b/U2/L3/U2_L3_Activity_Two.java
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diff --git a/U2/L4/U2_L4_Activity_One.java b/U2/L4/U2_L4_Activity_One.java
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diff --git a/U2/L4/U2_L4_Activity_Two.java b/U2/L4/U2_L4_Activity_Two.java
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diff --git a/U2/L5/U2_L5_Activity_One.java b/U2/L5/U2_L5_Activity_One.java
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diff --git a/U2/L5/U2_L5_Activity_Three.java b/U2/L5/U2_L5_Activity_Three.java
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diff --git a/U2/L5/U2_L5_Activity_Two.java b/U2/L5/U2_L5_Activity_Two.java
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diff --git a/U2/L6/U2_L6_Activity_One.java b/U2/L6/U2_L6_Activity_One.java
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diff --git a/U2/L6/U2_L6_Activity_Two.java b/U2/L6/U2_L6_Activity_Two.java
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diff --git a/U2/L7/U2_L7_Activitiy_One.java b/U2/L7/U2_L7_Activitiy_One.java
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diff --git a/U2/L7/U2_L7_Activity_Three.java b/U2/L7/U2_L7_Activity_Three.java
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diff --git a/U2/L7/U2_L7_Activity_Two.java b/U2/L7/U2_L7_Activity_Two.java
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diff --git a/U2/L8/U2_L8_Activity_One.java b/U2/L8/U2_L8_Activity_One.java
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index 0000000..124191c
--- /dev/null
+++ b/U2/L8/U2_L8_Activity_One.java
@@ -0,0 +1,18 @@
+/* Lesson 8 Coding Activity Question 1 */
+
+import java.util.Scanner;
+import testing.Math;
+
+public class U2_L8_Activity_One {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter a positive integer:");
+        int rn = scan.nextInt();
+        System.out.println((int) (Math.random() * (rn + 1)) + 2);
+        System.out.println((int) (Math.random() * (rn + 1)) + 2);
+        System.out.println((int) (Math.random() * (rn + 1)) + 2);
+
+        scan.close();
+    }
+}
diff --git a/U2/L8/U2_L8_Activity_Three.java b/U2/L8/U2_L8_Activity_Three.java
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index 0000000..c755c9d
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+++ b/U2/L8/U2_L8_Activity_Three.java
@@ -0,0 +1,14 @@
+/* Lesson 8 Coding Activity Question 3 */
+
+import java.util.Scanner;
+
+public class U2_L8_Activity_Three {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter two doubles:");
+        Double d1 = scan.nextDouble();
+        Double d2 = scan.nextDouble();
+        System.out.println("Difference: " + Math.abs(Math.round(d1 - d2)));
+    }
+}
diff --git a/U2/L8/U2_L8_Activity_Two.java b/U2/L8/U2_L8_Activity_Two.java
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index 0000000..6821106
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+++ b/U2/L8/U2_L8_Activity_Two.java
@@ -0,0 +1,20 @@
+/* Lesson 8 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U2_L8_Activity_Two {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter the first x-coordinate:");
+        Double x1 = scan.nextDouble();
+        System.out.println("Enter the second x-coordinate:");
+        Double x2 = scan.nextDouble();
+        System.out.println("Enter the first y-coordinate:");
+        Double y1 = scan.nextDouble();
+        System.out.println("Enter the second y-coordinate:");
+        Double y2 = scan.nextDouble();
+        Double slope = (y2 - y1) / (x2 - x1);
+        System.out.println("Slope: " + slope);
+    }
+}
diff --git a/U3/Assignment3.java b/U3/Assignment3.java
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index 0000000..3ffb6a6
--- /dev/null
+++ b/U3/Assignment3.java
@@ -0,0 +1,52 @@
+import java.util.Scanner;
+
+public class Assignment3 {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+
+        System.out.println("Welcome. What is your name?");
+        String name = scan.nextLine();
+
+        System.out.println(
+            "Hello " + name + ". Are you ready to crack the code?"
+        );
+        String ready = scan.nextLine();
+
+        if (ready.equalsIgnoreCase("yes")) {
+            System.out.println("\nPHASE 1");
+            System.out.println("Enter a string:");
+            String s = scan.nextLine();
+
+            if (s.length() == 3) {
+                System.out.println("Correct!");
+
+                System.out.println("\nPHASE 2");
+                System.out.println("Enter a number:");
+                int n1 = scan.nextInt();
+
+                if (n1 == 19 || (n1 >= 35 && n1 < 78)) {
+                    System.out.println("Correct!");
+
+                    System.out.println("\nPHASE 3");
+                    System.out.println("Enter a number:");
+                    int n2 = scan.nextInt();
+
+                    if (n2 > 0 && (n2 % 2 == 0 || n2 % 10 == 1)) {
+                        System.out.println("Correct!");
+                        System.out.println("You have cracked the code!");
+                    } else {
+                        System.out.println("Sorry, that was incorrect!");
+                        System.out.println("Better luck next time!");
+                    }
+                } else {
+                    System.out.println("Sorry, that was incorrect!");
+                    System.out.println("Better luck next time!");
+                }
+            } else {
+                System.out.println("Sorry, that was incorrect!");
+                System.out.println("Better luck next time!");
+            }
+        }
+    }
+}
diff --git a/U3/L1/U3_L1_Activity_Four.java b/U3/L1/U3_L1_Activity_Four.java
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index 0000000..480092c
--- /dev/null
+++ b/U3/L1/U3_L1_Activity_Four.java
@@ -0,0 +1,19 @@
+/* Lesson 1 Coding Activity Question 4 */
+
+import java.util.Scanner;
+
+public class U3_L1_Activity_Four {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter an integer:");
+        int x = scan.nextInt();
+        if (x % 2 == 0 && x % 3 == 0) {
+            System.out.println("Divisible by 2!\n Divisible by 3!");
+        } else if (x % 2 == 0) {
+            System.out.println("Divisible by 2!");
+        } else if (x % 3 == 0) {
+            System.out.println("Divisible by 3!");
+        }
+    }
+}
diff --git a/U3/L1/U3_L1_Activity_One.java b/U3/L1/U3_L1_Activity_One.java
new file mode 100755
index 0000000..dcd8fba
--- /dev/null
+++ b/U3/L1/U3_L1_Activity_One.java
@@ -0,0 +1,15 @@
+/* Lesson 1 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U3_L1_Activity_One {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter a double:");
+        double x = scan.nextDouble();
+        if (x == 12.345) {
+            System.out.println("YES");
+        }
+    }
+}
diff --git a/U3/L1/U3_L1_Activity_Three.java b/U3/L1/U3_L1_Activity_Three.java
new file mode 100755
index 0000000..4a175db
--- /dev/null
+++ b/U3/L1/U3_L1_Activity_Three.java
@@ -0,0 +1,16 @@
+/* Lesson 1 Coding Activity Question 3 */
+
+import java.util.Scanner;
+
+public class U3_L1_Activity_Three {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter two integers:");
+        int x = scan.nextInt();
+        int x1 = scan.nextInt();
+        if (x * 2 == x1) {
+            System.out.println("YES");
+        }
+    }
+}
diff --git a/U3/L1/U3_L1_Activity_Two.java b/U3/L1/U3_L1_Activity_Two.java
new file mode 100755
index 0000000..8e8e324
--- /dev/null
+++ b/U3/L1/U3_L1_Activity_Two.java
@@ -0,0 +1,15 @@
+/* Lesson 1 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U3_L1_Activity_Two {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Please enter an integer:");
+        int x = scan.nextInt();
+        if (x == 48) {
+            System.out.println("YES");
+        }
+    }
+}
diff --git a/U3/L2/U3_L2_Activity_Four.java b/U3/L2/U3_L2_Activity_Four.java
new file mode 100644
index 0000000..b4a4c65
--- /dev/null
+++ b/U3/L2/U3_L2_Activity_Four.java
@@ -0,0 +1,21 @@
+/* Lesson 2 Coding Activity Question 4 */
+
+import java.util.Scanner;
+
+public class U3_L2_Activity_Four {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Enter two test scores:");
+        double a = sc.nextDouble();
+        double b = sc.nextDouble();
+
+        if (a < 0 || a > 100) {
+            System.out.println("Not Valid");
+        }
+        if (b < 0 || b > 100) {
+            System.out.println("Not Valid");
+        }
+    }
+}
diff --git a/U3/L2/U3_L2_Activity_One.java b/U3/L2/U3_L2_Activity_One.java
new file mode 100644
index 0000000..a0cb79e
--- /dev/null
+++ b/U3/L2/U3_L2_Activity_One.java
@@ -0,0 +1,24 @@
+/* Lesson 2 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U3_L2_Activity_One
+{
+  public static void main(String[] args)
+  {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Please enter five numbers:");
+        double a = sc.nextDouble();
+        double b = sc.nextDouble();
+        double c = sc.nextDouble();
+        double d = sc.nextDouble();
+        double e = sc.nextDouble();
+
+        double average = (a + b + c + d + e) / 5.0;
+
+        if (average >= 89.95) {
+            System.out.println("ABOVE AVERAGE");
+        }
+    }
+}
diff --git a/U3/L2/U3_L2_Activity_Three.java b/U3/L2/U3_L2_Activity_Three.java
new file mode 100644
index 0000000..de70b41
--- /dev/null
+++ b/U3/L2/U3_L2_Activity_Three.java
@@ -0,0 +1,17 @@
+/* Lesson 2 Coding Activity Question 3 */
+
+import java.util.Scanner;
+
+public class U3_L2_Activity_Three {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("What is the temperature?");
+        double temp = sc.nextDouble();
+
+        if (temp < 97 || temp > 99) {
+            System.out.println("NOT NORMAL");
+        }
+    }
+}
diff --git a/U3/L2/U3_L2_Activity_Two.java b/U3/L2/U3_L2_Activity_Two.java
new file mode 100644
index 0000000..89ab6e5
--- /dev/null
+++ b/U3/L2/U3_L2_Activity_Two.java
@@ -0,0 +1,17 @@
+/* Lesson 2 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U3_L2_Activity_Two
+{
+  public static void main(String[] args)
+  {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Please enter two numbers:");
+        double a = sc.nextDouble();
+        double b = sc.nextDouble();
+
+        System.out.println("Smallest is: " + Math.min(a, b));
+    }
+}
\ No newline at end of file
diff --git a/U3/L3/U3_L3_Activity_Four.java b/U3/L3/U3_L3_Activity_Four.java
new file mode 100644
index 0000000..dc510f3
--- /dev/null
+++ b/U3/L3/U3_L3_Activity_Four.java
@@ -0,0 +1,19 @@
+/* Lesson 3 Coding Activity Question 4 */
+
+import java.util.Scanner;
+
+public class U3_L3_Activity_Four {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("What is the temperature?");
+        double temp = sc.nextDouble();
+
+        if (temp >= 97 && temp <= 99) {
+            System.out.println("Temperature is OK");
+        } else {
+            System.out.println("NOT NORMAL");
+        }
+    }
+}
diff --git a/U3/L3/U3_L3_Activity_One.java b/U3/L3/U3_L3_Activity_One.java
new file mode 100644
index 0000000..9431b5e
--- /dev/null
+++ b/U3/L3/U3_L3_Activity_One.java
@@ -0,0 +1,19 @@
+/* Lesson 3 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U3_L3_Activity_One {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Please enter an integer");
+        int n = sc.nextInt();
+
+        if (n % 2 == 0) {
+            System.out.println("Even");
+        } else {
+            System.out.println("Odd");
+        }
+    }
+}
diff --git a/U3/L3/U3_L3_Activity_Three.java b/U3/L3/U3_L3_Activity_Three.java
new file mode 100644
index 0000000..4f0f490
--- /dev/null
+++ b/U3/L3/U3_L3_Activity_Three.java
@@ -0,0 +1,26 @@
+/* Lesson 3 Coding Activity Question 3 */
+
+import java.util.Scanner;
+
+public class U3_L3_Activity_Three {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Please enter two integers:");
+        System.out.print("> ");
+        int a = sc.nextInt();
+        System.out.print("> ");
+        int b = sc.nextInt();
+
+        System.out.println(a + " + " + b + " = ?");
+        System.out.print("> ");
+        int answer = sc.nextInt();
+
+        if (answer == a + b) {
+            System.out.println("Correct!");
+        } else {
+            System.out.println("Wrong");
+        }
+    }
+}
diff --git a/U3/L3/U3_L3_Activity_Two.java b/U3/L3/U3_L3_Activity_Two.java
new file mode 100644
index 0000000..c621372
--- /dev/null
+++ b/U3/L3/U3_L3_Activity_Two.java
@@ -0,0 +1,27 @@
+/* Lesson 3 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U3_L3_Activity_Two {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Please enter a letter grade:");
+        String grade = sc.nextLine();
+
+        if (grade.equals("A")) {
+            System.out.println("[90-100]");
+        } else if (grade.equals("B")) {
+            System.out.println("[80-90)");
+        } else if (grade.equals("C")) {
+            System.out.println("[70-80)");
+        } else if (grade.equals("D")) {
+            System.out.println("[60-70)");
+        } else if (grade.equals("F")) {
+            System.out.println("[0-60)");
+        } else {
+            System.out.println("Invalid letter grade");
+        }
+    }
+}
diff --git a/U3/L4/U3_L4_Activity_One.java b/U3/L4/U3_L4_Activity_One.java
new file mode 100644
index 0000000..bd4215d
--- /dev/null
+++ b/U3/L4/U3_L4_Activity_One.java
@@ -0,0 +1,19 @@
+/* Lesson 4 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U3_L4_Activity_One {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Enter a number:");
+        int n = sc.nextInt();
+
+        if (n < 65 || n > 100) {
+            System.out.println("True");
+        } else {
+            System.out.println("False");
+        }
+    }
+}
diff --git a/U3/L4/U3_L4_Activity_Three.java b/U3/L4/U3_L4_Activity_Three.java
new file mode 100644
index 0000000..df178f7
--- /dev/null
+++ b/U3/L4/U3_L4_Activity_Three.java
@@ -0,0 +1,28 @@
+/* Lesson 4 Coding Activity Question 3 */
+
+import java.util.Scanner;
+
+public class U3_L4_Activity_Three {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Please enter the latitude:");
+        double lat = sc.nextDouble();
+        System.out.println("Please enter the longitude:");
+        double lon = sc.nextDouble();
+
+        boolean latValid = lat >= -90 && lat <= 90;
+        boolean lonValid = lon >= -180 && lon <= 180;
+
+        if (!latValid) {
+            System.out.println("latitude is incorrect");
+        }
+        if (!lonValid) {
+            System.out.println("longitude is incorrect");
+        }
+        if (latValid && lonValid) {
+            System.out.println("The location: " + lat + ", " + lon);
+        }
+    }
+}
diff --git a/U3/L4/U3_L4_Activity_Two.java b/U3/L4/U3_L4_Activity_Two.java
new file mode 100644
index 0000000..f473065
--- /dev/null
+++ b/U3/L4/U3_L4_Activity_Two.java
@@ -0,0 +1,20 @@
+/* Lesson 4 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U3_L4_Activity_Two {
+
+    public static void main(String[] args) {
+        Scanner sc = new Scanner(System.in);
+
+        System.out.println("Enter two numbers:");
+        int a = sc.nextInt();
+        int b = sc.nextInt();
+
+        if (a >= 0 && b >= 0 && a % 2 == 0 && b % 2 == 0) {
+            System.out.println("Both are positive and even.");
+        } else {
+            System.out.println("At least one is negative or odd.");
+        }
+    }
+}
diff --git a/U3/L5/U3_L5_Activity_One.java b/U3/L5/U3_L5_Activity_One.java
new file mode 100644
index 0000000..4dd99c3
--- /dev/null
+++ b/U3/L5/U3_L5_Activity_One.java
@@ -0,0 +1,14 @@
+/* Lesson 5 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U3_L5_Activity_One {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter 2 integers:");
+        int x = scan.nextInt();
+        Double y = scan.nextDouble();
+        if (x / y > 1 && x / y <= 8) System.out.println("Ratio OK");
+    }
+}
diff --git a/U3/L5/U5_L5_Activity_Two.java b/U3/L5/U5_L5_Activity_Two.java
new file mode 100644
index 0000000..8613f86
--- /dev/null
+++ b/U3/L5/U5_L5_Activity_Two.java
@@ -0,0 +1,18 @@
+/* Lesson 5 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U3_L5_Activity_Two {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter two numbers:");
+        double a = scan.nextDouble();
+        int b = scan.nextInt();
+        if (a % b != 0) {
+            System.out.println(b + " is not a factor of " + a);
+        } else {
+            System.out.println(b + " is a factor of " + a);
+        }
+    }
+}
diff --git a/U3/L6/U3_L6_Activity_One.java b/U3/L6/U3_L6_Activity_One.java
new file mode 100644
index 0000000..12615f7
--- /dev/null
+++ b/U3/L6/U3_L6_Activity_One.java
@@ -0,0 +1,18 @@
+/* Lesson 6 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U3_L6_Activity_One {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter a number in the fifties");
+        int num = scan.nextInt();
+
+        if (num < 50 || num > 59) {
+            System.out.println("That's not in the fifties!");
+            num = 55;
+        }
+        System.out.println("Your number is " + num);
+    }
+}
diff --git a/U3/L6/U3_L6_Activity_Two.java b/U3/L6/U3_L6_Activity_Two.java
new file mode 100644
index 0000000..31cdb04
--- /dev/null
+++ b/U3/L6/U3_L6_Activity_Two.java
@@ -0,0 +1,16 @@
+/* Lesson 6 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U3_L6_Activity_Two {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        int x = scan.nextInt();
+        int y = scan.nextInt();
+
+        if (y <= 9 || (x > 2 && x * y > 10)) {
+            System.out.println("pass");
+        }
+    }
+}
diff --git a/U3/L7/U3_L7_Activity_One.java b/U3/L7/U3_L7_Activity_One.java
new file mode 100644
index 0000000..50bc139
--- /dev/null
+++ b/U3/L7/U3_L7_Activity_One.java
@@ -0,0 +1,17 @@
+/* Lesson 7 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U3_L7_Activity_One {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter password:");
+        String password = scan.nextLine();
+        if (password.equals("bulbasaur")) {
+            System.out.println("Access granted!");
+        } else {
+            System.out.println("Access denied!");
+        }
+    }
+}
diff --git a/U3/L7/U3_L7_Activity_Three.java b/U3/L7/U3_L7_Activity_Three.java
new file mode 100644
index 0000000..a23615f
--- /dev/null
+++ b/U3/L7/U3_L7_Activity_Three.java
@@ -0,0 +1,29 @@
+/* Lesson 7 Coding Activity Question 3 */
+
+import java.util.Scanner;
+import shapes.*;
+
+public class U3_L7_Activity_Three {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+
+        System.out.println(
+            "Enter the side length of the first regular polygon:"
+        );
+        double len1 = scan.nextDouble();
+        RegularPolygon poly1 = new RegularPolygon(len1);
+
+        System.out.println("Enter the number of sides of the second polygon:");
+        int sides2 = scan.nextInt();
+        System.out.println("Enter the side length of the second polygon:");
+        double len2 = scan.nextDouble();
+        RegularPolygon poly2 = new RegularPolygon(sides2, len2);
+
+        if (poly1.equals(poly2)) {
+            System.out.println("Congruent Regular Polygons!");
+        } else {
+            System.out.println("Different Regular Polygons");
+        }
+    }
+}
diff --git a/U3/L7/U3_L7_Activity_Two.java b/U3/L7/U3_L7_Activity_Two.java
new file mode 100644
index 0000000..f15681c
--- /dev/null
+++ b/U3/L7/U3_L7_Activity_Two.java
@@ -0,0 +1,28 @@
+/* Lesson 7 Coding Activity Question 2 */
+
+import java.util.Scanner;
+
+public class U3_L7_Activity_Two {
+
+    public static void main(String[] args) {
+        Scanner scan = new Scanner(System.in);
+        System.out.println("Enter 2 strings:");
+        String a = scan.nextLine();
+        String b = scan.nextLine();
+
+        if (a.equals(b)) {
+            System.out.println("Equal!");
+        } else if (a.equalsIgnoreCase(b)) {
+            System.out.println("Different case");
+        } else if (
+            a.length() == b.length() &&
+            a
+                .substring(0, a.length() - 1)
+                .equals(b.substring(0, b.length() - 1))
+        ) {
+            System.out.println("Close enough");
+        } else {
+            System.out.println("Try again");
+        }
+    }
+}
diff --git a/U5/U5_L1_Activity_One.java b/U5/U5_L1_Activity_One.java
new file mode 100755
index 0000000..d72c61f
--- /dev/null
+++ b/U5/U5_L1_Activity_One.java
@@ -0,0 +1,14 @@
+/* Lesson 1 Coding Activity Question 1 */
+
+import java.util.Scanner;
+
+public class U5_L1_Activity_One {
+
+    /* Add the method myMethod here */
+
+    // You can uncomment and add to the main method to test your code
+    // You will need to remove/comment out this method before checking your code for a score
+    public static void myMethod() {
+        System.out.println("I'm a void method!");
+    }
+}