diff --git a/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js b/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js
index cf50f6cad..ff7879a45 100644
--- a/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js
+++ b/implement-and-rewrite-tests/implement-tests-with-node-test/1-get-angle-type.test.js
@@ -10,3 +10,28 @@ test("Classifies right angles", () => {
   const right = getAngleType(90);
   assert.equal(right, "Right angle");
 });
+
+test("Classifies acute angles", () => {
+  const acute = getAngleType(45);
+  assert.equal(acute, "Acute angle");
+});
+
+test("Classifies obtuse angles", () => {
+  const obtuse = getAngleType(120);
+  assert.equal(obtuse, "Obtuse angle");
+});
+
+test("Classifies straight angles", () => {
+  const straight = getAngleType(180);
+  assert.equal(straight, "Straight angle");
+});
+
+test("Classifies reflex angles", () => {
+  const reflex = getAngleType(270);
+  assert.equal(reflex, "Reflex angle");
+});
+
+test("Classifies invalid angles", () => {
+  const invalid = getAngleType(400);
+  assert.equal(invalid, "Invalid angle");
+});
diff --git a/implement-and-rewrite-tests/implement-tests-with-node-test/2-is-proper-fraction.test.js b/implement-and-rewrite-tests/implement-tests-with-node-test/2-is-proper-fraction.test.js
index a29084605..4f1f4a323 100644
--- a/implement-and-rewrite-tests/implement-tests-with-node-test/2-is-proper-fraction.test.js
+++ b/implement-and-rewrite-tests/implement-tests-with-node-test/2-is-proper-fraction.test.js
@@ -10,3 +10,31 @@ test("Basic proper fraction", () => {
   // Example: 1/2 is a proper fraction
   assert.equal(isProperFraction(1, 2), true);
 });
+
+test("Improper fraction where numerator is bigger than denominator", () => {
+  assert.equal(isProperFraction(3, 2), false);
+});
+
+test("Proper fraction with negative denominator", () => {
+  assert.equal(isProperFraction(1, -2), true);
+});
+
+test("Proper fraction with negative numerator", () => {
+  assert.equal(isProperFraction(-2, 4), true);
+});
+
+test("Proper fraction with both negatives where numerator is smaller", () => {
+  assert.equal(isProperFraction(-2, -4), true);
+});
+
+test("Proper fraction with both negatives where numerator is bigger", () => {
+  assert.equal(isProperFraction(-3, -2), false);
+});
+
+test("Improper fraction with equal values", () => {
+  assert.equal(isProperFraction(2, 2), false);
+});
+
+test("Proper fraction with zero numerator", () => {
+  assert.equal(isProperFraction(0, 4), true);
+});
diff --git a/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js b/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js
index f5092d9b1..0b19bf29c 100644
--- a/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js
+++ b/implement-and-rewrite-tests/implement-tests-with-node-test/3-get-card-value.test.js
@@ -5,12 +5,64 @@ import { getCardValue } from "../implement/3-get-card-value.js";
 
 // TODO: Write tests to cover all outcomes, including throwing errors for invalid cards.
 
+// test("Valid single-digit card", () => {
+//   assert.equal(getCardValue("9♠"), 9);
+// });
+
+// test("Arbitrary non-card string", () => {
+//   assert.throws(
+//     () => getCardValue("invalid"),
+//     /Expected a number followed by a suit, but got "invalid"/
+//   );
+// });
+
 test("Valid single-digit card", () => {
-  assert.equal(getCardValue("9♠"), 9);
+  assert.equal(getCardValue("2♠"), 2);
 });
-
-test("Arbitrary non-card string", () => {
-  assert.throws(() => getCardValue("invalid"), /Expected a number followed by a suit, but got "invalid"/, "Expected clear error");
+test("Valid double-digit card", () => {
+  assert.equal(getCardValue("10♥"), 10);
+});
+test("Valid king card", () => {
+  assert.equal(getCardValue("Q♣"), 10);
+});
+test("Valid queen card", () => {
+  assert.equal(getCardValue("K♠"), 10);
+});
+test("Valid jack card", () => {
+  assert.equal(getCardValue("J♦"), 10);
+});
+test("Valid ace card", () => {
+  assert.equal(getCardValue("A♠"), 11);
 });
 
 // TODO: What other invalid card cases can you think of?
+
+test("No suit symbol", () => {
+  assert.throws(
+    () => getCardValue("A"),
+    Error,
+    "Should throw an error for card without suit"
+  );
+});
+
+test("Invalid number", () => {
+  assert.throws(
+    () => getCardValue("0"),
+    Error,
+    "Should throw an error for card with invalid number"
+  );
+});
+test("Empty input", () => {
+  assert.throws(
+    () => getCardValue(""),
+    Error,
+    "Should throw an error for empty input"
+  );
+});
+test("Any other invalid input", () => {
+  assert.throws(
+    () => getCardValue("10♥♥"),
+    Error,
+    "Should throw an error for an invalid input"
+  );
+});
diff --git a/implement-and-rewrite-tests/implement/1-get-angle-type.js b/implement-and-rewrite-tests/implement/1-get-angle-type.js
index 8a6fba050..d9d57bdb2 100644
--- a/implement-and-rewrite-tests/implement/1-get-angle-type.js
+++ b/implement-and-rewrite-tests/implement/1-get-angle-type.js
@@ -16,6 +16,19 @@
 // After you have implemented the function, write tests to cover all the cases, and
 // execute the code to ensure all tests pass.
 
-export function getAngleType(angle) {
-  // TODO: Implement this function
+function getAngleType(angle) {
+  if (angle === 90) {
+    return `Right angle`;
+  } else if (angle >= 0 && angle < 90) {
+    return `Acute angle`;
+  } else if (angle > 90 && angle < 180) {
+    return `Obtuse angle`;
+  } else if (angle === 180) {
+    return `Straight angle`;
+  } else if (angle > 180 && angle <= 360) {
+    return `Reflex angle`;
+  }
+  return `Invalid angle`;
 }
+
+export { getAngleType };
diff --git a/implement-and-rewrite-tests/implement/2-is-proper-fraction.js b/implement-and-rewrite-tests/implement/2-is-proper-fraction.js
index f983800f0..7a2b894b1 100644
--- a/implement-and-rewrite-tests/implement/2-is-proper-fraction.js
+++ b/implement-and-rewrite-tests/implement/2-is-proper-fraction.js
@@ -13,6 +13,8 @@
 // After you have implemented the function, write tests to cover all the cases, and
 // execute the code to ensure all tests pass.
 
-export function isProperFraction(numerator, denominator) {
-  // TODO: Implement this function
+function isProperFraction(numerator, denominator) {
+  return Math.abs(numerator) < Math.abs(denominator);
 }
+
+export { isProperFraction };
diff --git a/implement-and-rewrite-tests/implement/3-get-card-value.js b/implement-and-rewrite-tests/implement/3-get-card-value.js
index 9614ab1ee..be208eb90 100644
--- a/implement-and-rewrite-tests/implement/3-get-card-value.js
+++ b/implement-and-rewrite-tests/implement/3-get-card-value.js
@@ -23,6 +23,38 @@
 // After you have implemented the function, write tests to cover all the cases, and
 // execute the code to ensure all tests pass.
 
-export function getCardValue(card) {
-  // TODO: Implement this function
+function getCardValue(card) {
+  if (card == "") {
+    throw new Error(`Missing a specific number and specific suit symbol`);
+  }
+  const cardRank = card.slice(0, -1);
+  const suit = card.slice(-1);
+
+  if (!["♠", "♥", "♦", "♣"].includes(suit)) {
+    throw new Error(`Missing a specific suit symbol`);
+  }
+
+  if (cardRank == "A") {
+    return 11;
+  }
+  if (cardRank == "J" || cardRank == "K" || cardRank == "Q") {
+    return 10;
+  }
+  if (
+    cardRank == "2" ||
+    cardRank == "3" ||
+    cardRank == "4" ||
+    cardRank == "5" ||
+    cardRank == "6" ||
+    cardRank == "7" ||
+    cardRank == "8" ||
+    cardRank == "9" ||
+    cardRank == "10"
+  ) {
+    return Number(cardRank);
+  } else {
+    throw new Error(`Missing a specific number and specific suit symbol`);
+  }
 }
+
+export { getCardValue };
diff --git a/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js b/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
index e0ba786ab..99f13e277 100644
--- a/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
+++ b/implement-and-rewrite-tests/rewrite-tests-with-jest/1-get-angle-type.test.js
@@ -12,7 +12,28 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test(`should return "Right angle" when (angle === 90)`, () => {
+  expect(getAngleType(90)).toEqual("Right angle");
+});
+
 // Case 3: Obtuse angles
+test(`should return "Obtuse angle when (90 < angle < 180)`, () => {
+  expect(getAngleType(91)).toEqual("Obtuse angle");
+  expect(getAngleType(135)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
 // Case 4: Straight angle
+test(`should return "Straight angle" when (angle === 180)`, () => {
+  expect(getAngleType(180)).toEqual("Straight angle");
+});
 // Case 5: Reflex angles
+test(`should return "Reflex angle" when (180 < angle < 360 )`, () => {
+  expect(getAngleType(181)).toEqual("Reflex angle");
+  expect(getAngleType(270)).toEqual("Reflex angle");
+  expect(getAngleType(359)).toEqual("Reflex angle");
+});
 // Case 6: Invalid angles
+test(`should return "Invalid angle" when (angle < 0 || angle > 360)`, () => {
+  expect(getAngleType(-1)).toEqual("Invalid angle");
+  expect(getAngleType(361)).toEqual("Invalid angle");
+});
diff --git a/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js b/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
index 5d49e2d8b..c513b1eed 100644
--- a/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
+++ b/implement-and-rewrite-tests/rewrite-tests-with-jest/2-is-proper-fraction.test.js
@@ -6,3 +6,31 @@ import { isProperFraction } from "../implement/2-is-proper-fraction.js";
 test(`should return false when denominator is zero`, () => {
   expect(isProperFraction(1, 0)).toEqual(false);
 });
+
+test(`should return true when numerator is less than denominator`, () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+});
+
+test(`should return false when numerator is more than denominator`, () => {
+  expect(isProperFraction(3, 2)).toEqual(false);
+});
+
+test(`should return true when denominator is negative`, () => {
+  expect(isProperFraction(1, -2)).toEqual(true);
+});
+
+test(`should return true when nominator is negative`, () => {
+  expect(isProperFraction(-2, 4)).toEqual(true);
+});
+
+test(`should return true with both negatives where numerator is smaller`, () => {
+  expect(isProperFraction(-2, -4)).toEqual(true);
+});
+
+test(`should return false with both negatives where numerator is bigger`, () => {
+  expect(isProperFraction(-3, -2)).toEqual(false);
+});
+
+test(`should return false with equal values`, () => {
+  expect(isProperFraction(2, 2)).toEqual(false);
+});
diff --git a/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js b/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
index a6de5a82a..78d739e98 100644
--- a/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
+++ b/implement-and-rewrite-tests/rewrite-tests-with-jest/3-get-card-value.test.js
@@ -15,4 +15,64 @@ test(`Should return 11 when given an ace 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
+// -----number cards------
+test(`Should return 2 when given a 2 card`, () => {
+  expect(getCardValue("2♥")).toEqual(2);
+});
 
+test(`Should return 3 when given a 3 card`, () => {
+  expect(getCardValue("3♣")).toEqual(3);
+});
+test(`Should return 4 when given a 4 card`, () => {
+  expect(getCardValue("4♦")).toEqual(4);
+});
+test(`Should return 5 when given a 5 card`, () => {
+  expect(getCardValue("5♠")).toEqual(5);
+});
+test(`Should return 6 when given a 6 card`, () => {
+  expect(getCardValue("6♦")).toEqual(6);
+});
+test(`Should return 7 when given a 7 card`, () => {
+  expect(getCardValue("7♥")).toEqual(7);
+});
+test(`Should return 8 when given a 8 card`, () => {
+  expect(getCardValue("8♠")).toEqual(8);
+});
+test(`Should return 9 when given a 9 card`, () => {
+  expect(getCardValue("9♥")).toEqual(9);
+});
+test(`Should return 10 when given a 10 card`, () => {
+  expect(getCardValue("10♣")).toEqual(10);
+});
+// -----remaining face cards-----
+test(`Should return 10 when given a jack card`, () => {
+  expect(getCardValue("J♥")).toEqual(10);
+});
+test(`Should return 10 when given a king card`, () => {
+  expect(getCardValue("K♣")).toEqual(10);
+});
+test(`Should return 10 when given a queen card`, () => {
+  expect(getCardValue("Q♥")).toEqual(10);
+});
+// -----invalid cards-----
+test("Should throw an error for card without suit", () => {
+  expect(() => getCardValue("A")).toThrow("Missing a specific suit symbol");
+});
+
+test("Should throw an error for card with invalid number", () => {
+  expect(() => getCardValue("0♥")).toThrow(
+    "Missing a specific number and specific suit symbol"
+  );
+});
+
+test("Should throw an error for empty input", () => {
+  expect(() => getCardValue("")).toThrow(
+    "Missing a specific number and specific suit symbol"
+  );
+});
+
+test("Should throw an error for an invalid input", () => {
+  expect(() => getCardValue("J♥♥")).toThrow(
+    "Missing a specific number and specific suit symbol"
+  );
+});