diff --git a/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
index 9e05a871e..972a4a495 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/1-get-angle-type.js
@@ -16,6 +16,32 @@
 
 function getAngleType(angle) {
   // TODO: Implement this function
+  // if angle is between 0 and 90 then return acute angle
+  if (angle > 0 && angle < 90) {
+    return "Acute angle";
+  }
+
+  // if it is exactly 90 return right angle
+  else if (angle === 90) {
+    return "Right angle";
+  }
+  // greater than 90 less than 180 return obtuse angle
+  else if (angle > 90 && angle < 180) {
+    return "Obtuse angle";
+  }
+  // if exactly 180 return straight angle
+  else if (angle === 180) {
+    return "Straight angle";
+  }
+  // greater than 180 less than 360 return reflex angle
+  else if (angle > 180 && angle < 360) {
+    return "Reflex angle";
+  }
+  // everything greater than 360 rand less than 0 return invalid angle
+  else {
+    return "Invalid angle";
+  }
+  // return a string tells user which angle
 }
 
 // The line below allows us to load the getAngleType function into tests in other files.
@@ -35,3 +61,18 @@ function assertEquals(actualOutput, targetOutput) {
 // Example: Identify Right Angles
 const right = getAngleType(90);
 assertEquals(right, "Right angle");
+
+const acute = getAngleType(45);
+assertEquals(acute, "Acute angle");
+
+const obtuse = getAngleType(120);
+assertEquals(obtuse, "Obtuse angle");
+
+const straight = getAngleType(180);
+assertEquals(straight, "Straight angle");
+
+const reflex = getAngleType(270);
+assertEquals(reflex, "Reflex angle");
+
+const invalid = getAngleType(200);
+assertEquals(invalid, "Invalid angle");
diff --git a/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js b/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
index 970cb9b64..3884d6558 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/2-is-proper-fraction.js
@@ -12,6 +12,8 @@
 
 function isProperFraction(numerator, denominator) {
   // TODO: Implement this function
+  if (denominator === 0) return false;
+  return Math.abs(numerator) < Math.abs(denominator);
 }
 
 // The line below allows us to load the isProperFraction function into tests in other files.
diff --git a/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js b/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
index c7559e787..775f9b2aa 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/implement/3-get-card-value.js
@@ -22,7 +22,31 @@
 // execute the code to ensure all tests pass.
 
 function getCardValue(card) {
-  // TODO: Implement this function
+  const suits = ["♠", "♥", "♦", "♣"]; // valid card suits
+
+  // must have a valid suit
+  if (!suits.includes(card.slice(-1))) {
+    throw new Error("Error invalid card");
+  }
+
+  const rank = card.slice(0, -1); // gets beginning character up to (not including) the last character and saves it in the rank variable.
+
+  // if card is an ace return 11
+  if (rank === "A") {
+    return 11;
+  }
+
+  // if card is face "J", "Q", "K"
+  if (rank === "J" || rank === "Q" || rank === "K") {
+    return 10;
+  }
+
+  const num = Number(rank);
+  // if card is a number card and card is bigger than 2 and less than 10 ("2" to "10"), should return its numerical value
+  if (!Number.isInteger(num) || rank !== String(num) || num < 2 || num > 10) {
+    throw new Error("Error invalid card");
+  }
+  return num;
 }
 
 // The line below allows us to load the getCardValue function into tests in other files.
@@ -39,14 +63,14 @@ function assertEquals(actualOutput, targetOutput) {
 
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
 // Examples:
-assertEquals(getCardValue("9♠"), 9);
+// assertEquals(getCardValue("9♠"), 9);
 
 // Handling invalid cards
-try {
-  getCardValue("invalid");
+// try {
+//   getCardValue("invalid");
 
-  // This line will not be reached if an error is thrown as expected
-  console.error("Error was not thrown for invalid card");
-} catch (e) {}
+//   // This line will not be reached if an error is thrown as expected
+//   console.error("Error was not thrown for invalid card");
+// } catch (e) {}
 
 // What other invalid card cases can you think of?
diff --git a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
index d777f348d..d8ea4be72 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
@@ -14,7 +14,34 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test(`should return "Right angle" when (angle === 90)`, () => {
+  // Test various right angles, including boundary cases
+  expect(getAngleType(90)).toEqual("Right angle");
+});
 // Case 3: Obtuse angles
+test(`should return "Obtuse angles" when (angle > 90 && < 180)`, () => {
+  // Test various obtuse angles, including boundary cases
+  expect(getAngleType(96)).toEqual("Obtuse angle");
+  expect(getAngleType(142)).toEqual("Obtuse angle");
+  expect(getAngleType(178)).toEqual("Obtuse angle");
+});
 // Case 4: Straight angle
+test(`should return "Straight angle" when (angle === 180)`, () => {
+  // Test various straight angles, including boundary cases
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 // Case 5: Reflex angles
+test(`should return "Reflex angles" when (angle > 180 && < 360)`, () => {
+  // Test various reflex angles, including boundary cases
+  expect(getAngleType(199)).toEqual("Reflex angle");
+  expect(getAngleType(245)).toEqual("Reflex angle");
+  expect(getAngleType(306)).toEqual("Reflex angle");
+});
 // Case 6: Invalid angles
+test(`should return "Invalid angles" when (angle is <= 0 && >= 360)`, () => {
+  // Test various invalid angles, including boundary cases
+  expect(getAngleType(400)).toEqual("Invalid angle");
+  expect(getAngleType(-7)).toBe("Invalid angle");
+  expect(getAngleType(360)).toBe("Invalid angle");
+  expect(getAngleType(0)).toBe("Invalid angle");
+});
diff --git a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
index 7f087b2ba..a218edffc 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
@@ -4,7 +4,45 @@ const isProperFraction = require("../implement/2-is-proper-fraction");
 
 // TODO: Write tests in Jest syntax to cover all combinations of positives, negatives, zeros, and other categories.
 
-// Special case: numerator is zero
+// Special case: denominator is zero
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+// Case 2: Proper fractions
+// the numerator is smaller than the denominator, so the fraction is a proper fraction
+test(`should return true when numerator < denominator`, () => {
+  expect(isProperFraction(6, 7)).toEqual(true);
+  expect(isProperFraction(2, 4)).toEqual(true);
+});
+
+// Case 3: Improper fractions
+// numerator is bigger than denominator, so the fraction is not proper
+test("should return false when numerator is bigger than denominator", () => {
+  expect(isProperFraction(8, 6)).toEqual(false);
+  expect(isProperFraction(4, 2)).toEqual(false);
+});
+
+// Case 4: Negative numbers
+// numerator or denominator is negative, but function compares absolute values
+test("should return false when |numerator| < |denominator| positive numerator and negative denominator)", () => {
+  expect(isProperFraction(7, -3)).toEqual(false);
+});
+test("should return true when |numerator| < |denominator| negative numerator and positive denominator)", () => {
+  expect(isProperFraction(-5, 9)).toEqual(true);
+});
+
+// Case 5: Numerator equals denominator fraction equals 1, so it is not proper
+test("should return false when numerator is equal to denominator", () => {
+  expect(isProperFraction(6, 6)).toEqual(false);
+});
+
+// Case 6: Numerator just less than denominator fraction is slightly below 1, so it is proper
+test("should return true when numerator is just less than denominator", () => {
+  expect(isProperFraction(2, 3)).toEqual(true);
+});
+
+// Case 7: Numerator greater than denominator fraction is slightly above 1, so it is not proper
+test("should return false when numerator is greater than denominator", () => {
+  expect(isProperFraction(6, 5)).toEqual(false);
+});
diff --git a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
index cf7f9dae2..7399d2f56 100644
--- a/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
+++ b/Sprint-3/1-implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
@@ -14,7 +14,34 @@ test(`Should return 11 when given an ace card`, () => {
 //   Face Cards (J, Q, K)
 //   Invalid Cards
 
+// Case 2: Face (J, Q, K)
+test(`Should return 10 when given an face card`, () => {
+  expect(getCardValue("J♣")).toEqual(10);
+});
+
+test(`Should return 10 when given an face card`, () => {
+  expect(getCardValue("Q♦")).toEqual(10);
+});
+
+test(`Should return 10 when given an face card`, () => {
+  expect(getCardValue("K♥")).toEqual(10);
+});
+// Case 3: Number Cards (2-10)
+test(`Should return numerical value when given an number card`, () => {
+  expect(() => getCardValue("5")).toThrow("Error invalid card");
+});
+
+test(`Should return error if the card string is invalid`, () => {
+  expect(() => getCardValue("17")).toThrow("Error invalid card");
+});
+
+// Case 4: Hex, Decimal Numbers
+test(`Should return error if the rank is a hex input`, () => {
+  expect(() => getCardValue("0x02♠")).toThrow("Error invalid card");
+  expect(() => getCardValue("2.1♠")).toThrow("Error invalid card");
+  expect(() => getCardValue("0002♠")).toThrow("Error invalid card");
+});
+
 // To learn how to test whether a function throws an error as expected in Jest,
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
-