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..1085b2bfd 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
@@ -1,12 +1,40 @@
+import {getAngleType} from "../implement/1-get-angle-type.js";
 import assert from "node:assert";
 import test from "node:test";
 
-import { getAngleType } from "../implement/1-get-angle-type.js";
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(75), "Acute angle");
+});
+
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(90), "Right angle");
+});
+
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(120), "Obtuse angle");
+});
+
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(180), "Straight angle");
+});
 
-// TODO: Write tests to cover all cases, including boundary and invalid cases.
-// Example: Identify Right Angles
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(210), "Reflex angle");
+});
+ 
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(400), "Invalid angle");
+});
+
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(0), "Invalid angle");
+});
 
-test("Classifies right angles", () => {
-  const right = getAngleType(90);
-  assert.equal(right, "Right angle");
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(360), "Invalid angle");
 });
+
+test("corrctly get angle type", function(){
+    assert.equal(getAngleType(-70), "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..ec3036b0e 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
@@ -7,6 +7,45 @@ import { isProperFraction } from "../implement/2-is-proper-fraction.js";
 // What combinations of numerators and denominators should you test?
 
 test("Basic proper fraction", () => {
-  // Example: 1/2 is a proper fraction
   assert.equal(isProperFraction(1, 2), true);
 });
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(2, 1), false);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(1, 0), false);
+});
+ 
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(0, 1), true);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(1, 1), false);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(-1, 2), true);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(1, -2), true);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(-1, -2), true);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(-5, 2), false);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(5, -2), false);
+});
+
+test("Basic proper fraction", () => {
+  assert.equal(isProperFraction(-3, -2), false);
+});
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..39eb05249 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
@@ -9,8 +9,66 @@ test("Valid single-digit card", () => {
   assert.equal(getCardValue("9♠"), 9);
 });
 
+test("Valid ten", () => {
+  assert.equal(getCardValue("10♥"), 10);
+});
+
+test("Ace returns 11", () => {
+  assert.equal(getCardValue("A♦"), 11);
+});
+
+test("Face cards return 10", () => {
+  assert.equal(getCardValue("J♣"), 10);
+  assert.equal(getCardValue("Q♠"), 10);
+  assert.equal(getCardValue("K♥"), 10);
+});
+
 test("Arbitrary non-card string", () => {
-  assert.throws(() => getCardValue("invalid"), /Expected a number followed by a suit, but got "invalid"/, "Expected clear error");
+  assert.throws(
+    () => getCardValue("invalid"),
+    /Expected a number followed by a suit, but got "invalid"/,
+    "Expected clear error"
+  );
+});
+
+test("Missing suit throws", () => {
+  assert.throws(() => getCardValue("A"), /Expected a number followed by a suit/);
 });
 
+
 // TODO: What other invalid card cases can you think of?
+
+test("Empty string throws", () => {
+  assert.throws(
+    () => getCardValue(""),
+    /Expected a number followed by a suit/
+  );
+});
+
+test("Suit only throws", () => {
+  assert.throws(
+    () => getCardValue("♠"),
+    /Expected a number followed by a suit/
+  );
+});
+
+test("Invalid rank throws", () => {
+  assert.throws(
+    () => getCardValue("1♠"),
+    /Expected a number followed by a suit/
+  );
+});
+
+test("Invalid suit throws", () => {
+  assert.throws(
+    () => getCardValue("9X"),
+    /Expected a number followed by a suit/
+  );
+});
+
+test("Rank with no suit character throws", () => {
+  assert.throws(
+    () => getCardValue("10"),
+    /Expected a number followed by a suit/
+  );
+});
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..e126ea800 100644
--- a/implement-and-rewrite-tests/implement/1-get-angle-type.js
+++ b/implement-and-rewrite-tests/implement/1-get-angle-type.js
@@ -1,5 +1,17 @@
 // Implement a function getAngleType
-//
+function getAngleType(angle) {
+  return angle > 0 && angle < 90
+    ? "Acute angle"
+    : angle === 90
+      ? "Right angle"
+      : angle > 90 && angle < 180
+        ? "Obtuse angle"
+        : angle === 180
+          ? "Straight angle"
+          : angle > 180 && angle < 360
+            ? "Reflex angle"
+            : "Invalid angle";
+}
 // Don't forget to write tests in implement-tests-with-node-test.
 //
 // When given an angle in degrees, it should return a string indicating the type of angle:
@@ -16,6 +28,4 @@
 // 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
-}
+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..b8c7173b8 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 +13,12 @@
 // 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) {
+  if (denominator === 0) {
+    return false;
+  }
+  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..a60c17103 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 +23,33 @@
 // 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) {
+  const suit = card.slice(-1);
+  const rank = card.slice(0, -1);
+  const suits = ["♠", "♥", "♦", "♣"];
+  const values = {
+    A: 11,
+    J: 10,
+    Q: 10,
+    K: 10,
+    "10": 10,
+    "9": 9,
+    "8": 8,
+    "7": 7,
+    "6": 6,
+    "5": 5,
+    "4": 4,
+    "3": 3,
+    "2": 2,
+  };
+
+  if (!suits.includes(suit) || values[rank] === undefined) {
+    throw new Error(
+      `Expected a number followed by a suit, but got "${card}"`
+    );
+  }
+
+  return values[rank];
 }
+
+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..222ac6ea6 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 +12,33 @@ test(`should return "Acute angle" when (0 < angle < 90)`, () => {
 });
 
 // Case 2: Right angle
+test(`should return "Right angle" when angle is 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(120)).toEqual("Obtuse angle");
+  expect(getAngleType(179)).toEqual("Obtuse angle");
+});
+
 // Case 4: Straight angle
+test(`should return "Straight angle" when angle is 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" for angles outside (0, 360)`, () => {
+  expect(getAngleType(0)).toEqual("Invalid angle");
+  expect(getAngleType(360)).toEqual("Invalid angle");
+  expect(getAngleType(-10)).toEqual("Invalid angle");
+  expect(getAngleType(400)).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..ab11487c9 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 +6,20 @@ 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 for proper fractions`, () => {
+  expect(isProperFraction(1, 2)).toEqual(true);
+  expect(isProperFraction(0, 5)).toEqual(true);
+  expect(isProperFraction(-1, 2)).toEqual(true);
+  expect(isProperFraction(1, -2)).toEqual(true);
+  expect(isProperFraction(-1, -2)).toEqual(true);
+});
+
+test(`should return false for improper fractions`, () => {
+  expect(isProperFraction(2, 1)).toEqual(false);
+  expect(isProperFraction(1, 1)).toEqual(false);
+  expect(isProperFraction(5, 3)).toEqual(false);
+  expect(isProperFraction(-5, 2)).toEqual(false);
+  expect(isProperFraction(5, -2)).toEqual(false);
+  expect(isProperFraction(-3, -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..172eddcfb 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
@@ -16,3 +16,45 @@ test(`Should return 11 when given an ace card`, () => {
 // please refer to the Jest documentation:
 // https://jestjs.io/docs/expect#tothrowerror
 
+test(`Should return numeric value for number cards`, () => {
+  expect(getCardValue("2♥")).toEqual(2);
+  expect(getCardValue("3♠")).toEqual(3);
+  expect(getCardValue("4♣")).toEqual(4);
+  expect(getCardValue("5♥")).toEqual(5);
+  expect(getCardValue("6♦")).toEqual(6);
+  expect(getCardValue("7♠")).toEqual(7);
+  expect(getCardValue("8♣")).toEqual(8);
+  expect(getCardValue("9♠")).toEqual(9);
+  expect(getCardValue("10♦")).toEqual(10);
+});
+
+test(`Should return 10 for face cards`, () => {
+  expect(getCardValue("J♣")).toEqual(10);
+  expect(getCardValue("Q♠")).toEqual(10);
+  expect(getCardValue("K♥")).toEqual(10);
+});
+
+// Invalid cards
+test(`should throw for invalid cards`, () => {
+  expect(() => getCardValue("invalid")).toThrow(
+    /Expected a number followed by a suit, but got "invalid"/
+  );
+  expect(() => getCardValue("A")).toThrow(
+    /Expected a number followed by a suit/
+  );
+  expect(() => getCardValue("")).toThrow(
+    /Expected a number followed by a suit/
+  );
+  expect(() => getCardValue("♠")).toThrow(
+    /Expected a number followed by a suit/
+  );
+  expect(() => getCardValue("1♠")).toThrow(
+    /Expected a number followed by a suit/
+  );
+  expect(() => getCardValue("9X")).toThrow(
+    /Expected a number followed by a suit/
+  );
+  expect(() => getCardValue("10")).toThrow(
+    /Expected a number followed by a suit/
+  );
+});