diff --git a/caesar/caesar.spec.js b/caesar/caesar.spec.js
index 5fcc086..24de84c 100644
--- a/caesar/caesar.spec.js
+++ b/caesar/caesar.spec.js
@@ -1,25 +1,26 @@
-const caesar = require("./caesar");
+const expect = require('expect');
+const caesar = require('./caesar')
 
-describe("caesar", function () {
-  it("works with single letters", function () {
-    expect(caesar("A", 1)).toEqual("B");
+describe('caesar', function() {
+  test('works with single letters', function() {
+    expect(caesar('A', 1)).toBe('B');
   });
-  xit("works with words", function () {
-    expect(caesar("Aaa", 1)).toEqual("Bbb");
+  test.skip('works with words', function() {
+    expect(caesar('Aaa', 1)).toBe('Bbb');
   });
-  xit("works with phrases", function () {
-    expect(caesar("Hello, World!", 5)).toEqual("Mjqqt, Btwqi!");
+  test.skip('works with phrases', function() {
+    expect(caesar('Hello, World!', 5)).toBe('Mjqqt, Btwqi!');
   });
-  xit("works with negative shift", function () {
-    expect(caesar("Mjqqt, Btwqi!", -5)).toEqual("Hello, World!");
+  test.skip('works with negative shift', function() {
+    expect(caesar('Mjqqt, Btwqi!', -5)).toBe('Hello, World!');
   });
-  xit("wraps", function () {
-    expect(caesar("Z", 1)).toEqual("A");
+  test.skip('wraps', function() {
+    expect(caesar('Z', 1)).toBe('A');
   });
-  xit("works with large shift factors", function () {
-    expect(caesar("Hello, World!", 75)).toEqual("Ebiil, Tloia!");
+  test.skip('works with large shift factors', function() {
+    expect(caesar('Hello, World!', 75)).toBe('Ebiil, Tloia!');
   });
-  xit("works with large negative shift factors", function () {
-    expect(caesar("Hello, World!", -29)).toEqual("Ebiil, Tloia!");
+  test.skip('works with large negative shift factors', function() {
+    expect(caesar('Hello, World!', -29)).toBe('Ebiil, Tloia!');
   });
 });
diff --git a/calculator/calculator.spec.js b/calculator/calculator.spec.js
index c07b6ba..0badb08 100644
--- a/calculator/calculator.spec.js
+++ b/calculator/calculator.spec.js
@@ -1,56 +1,56 @@
-const calculator = require ('./calculator.js');
+const expect = require('expect');const calculator = require ('./calculator.js');
 
 describe('add', function() {
 	it('adds 0 and 0', function() {
 		expect(calculator.add(0,0)).toEqual(0);
 	});
 
-	test.skip('adds 2 and 2', () => {
-		expect(calculator.add(2,2)).toBe(4);
+	xit('adds 2 and 2', function() {
+		expect(calculator.add(2,2)).toEqual(4);
 	});
 
-	test.skip('adds positive numbers', () => {
-		expect(calculator.add(2,6)).toBe(8);
+	xit('adds positive numbers', function() {
+		expect(calculator.add(2,6)).toEqual(8);
 	});
 });
 
-describe('subtract', () => {
-	test.skip('subtracts numbers', () => {
-		expect(calculator.subtract(10,4)).toBe(6);
+describe('subtract', function() {
+	xit('subtracts numbers', function() {
+		expect(calculator.subtract(10,4)).toEqual(6);
 	});
 });
 
-describe('sum', () => {
-	test.skip('computes the sum of an empty array', () => {
-		expect(calculator.sum([])).toBe(0);
+describe('sum', function() {
+	xit('computes the sum of an empty array', function() {
+		expect(calculator.sum([])).toEqual(0);
 	});
 
-	test.skip('computes the sum of an array of one number', () => {
-		expect(calculator.sum([7])).toBe(7);
+	xit('computes the sum of an array of one number', function() {
+		expect(calculator.sum([7])).toEqual(7);
 	});
 
-	test.skip('computes the sum of an array of two numbers', () => {
-		expect(calculator.sum([7,11])).toBe(18);
+	xit('computes the sum of an array of two numbers', function() {
+		expect(calculator.sum([7,11])).toEqual(18);
 	});
 
-	test.skip('computes the sum of an array of many numbers', () => {
-		expect(calculator.sum([1,3,5,7,9])).toBe(25);
+	xit('computes the sum of an array of many numbers', function() {
+		expect(calculator.sum([1,3,5,7,9])).toEqual(25);
 	});
 });
 
-describe('multiply', () => {
-	test.skip('multiplies two numbers', () => {
-		expect(calculator.multiply([2,4])).toBe(8);
+describe('multiply', function() {
+	xit('multiplies two numbers', function() {
+		expect(calculator.multiply([2,4])).toEqual(8);
 	});
 
-	test.skip('multiplies several numbers', () => {
-		expect(calculator.multiply([2,4,6,8,10,12,14])).toBe(645120);
+	xit('multiplies several numbers', function() {
+		expect(calculator.multiply([2,4,6,8,10,12,14])).toEqual(645120);
 	});
 });
 
-describe('power', () => {
-	test.skip('raises one number to the power of another number', () => {
-		expect(calculator.power(4,3)).toBe(64); // 4 to third power is 64
+describe('power', function() {
+	xit('raises one number to the power of another number', function() {
+		expect(calculator.power(4,3)).toEqual(64); // 4 to third power is 64
 	});
 });
 
diff --git a/fibonacci/fibonacci.spec.js b/fibonacci/fibonacci.spec.js
index 06a0e4f..062b8bd 100644
--- a/fibonacci/fibonacci.spec.js
+++ b/fibonacci/fibonacci.spec.js
@@ -1,31 +1,31 @@
-const fibonacci = require("./fibonacci");
+const expect = require('expect');const fibonacci = require('./fibonacci')
 
-describe("fibonacci", function () {
-  it("works", function () {
+describe('fibonacci', function() {
+  it('works', function() {
     expect(fibonacci(4)).toEqual(3);
   });
-  xit("works", function () {
+  xit('works', function() {
     expect(fibonacci(6)).toEqual(8);
   });
-  xit("works", function () {
+  xit('works', function() {
     expect(fibonacci(10)).toEqual(55);
   });
-  xit("works", function () {
+  xit('works', function() {
     expect(fibonacci(15)).toEqual(610);
   });
-  xit("works", function () {
+  xit('works', function() {
     expect(fibonacci(25)).toEqual(75025);
   });
-  xit("doesn't accept negatives", function () {
+  xit('doesn\'t accept negatives', function() {
     expect(fibonacci(-25)).toEqual("OOPS");
   });
-  xit("DOES accept strings", function () {
+  xit('DOES accept strings', function() {
     expect(fibonacci("1")).toEqual(1);
   });
-  xit("DOES accept strings", function () {
+  xit('DOES accept strings', function() {
     expect(fibonacci("2")).toEqual(1);
   });
-  xit("DOES accept strings", function () {
+  xit('DOES accept strings', function() {
     expect(fibonacci("8")).toEqual(21);
   });
 });
diff --git a/findTheOldest/findTheOldest.spec.js b/findTheOldest/findTheOldest.spec.js
index 670a211..04e41c1 100644
--- a/findTheOldest/findTheOldest.spec.js
+++ b/findTheOldest/findTheOldest.spec.js
@@ -1,4 +1,4 @@
-let findTheOldest = require('./findTheOldest')
+const expect = require('expect');let findTheOldest = require('./findTheOldest')
 
 describe('findTheOldest', function() {
   it('finds the oldest person!', function() {
diff --git a/getTheTitles/getTheTitles.spec.js b/getTheTitles/getTheTitles.spec.js
index aafc5c6..90d6279 100644
--- a/getTheTitles/getTheTitles.spec.js
+++ b/getTheTitles/getTheTitles.spec.js
@@ -1,4 +1,4 @@
-let getTheTitles = require('./getTheTitles')
+const expect = require('expect');let getTheTitles = require('./getTheTitles')
 
 describe('getTheTitles', function() {
     const books = [
diff --git a/helloWorld/helloWorld.js b/helloWorld/helloWorld.js
index a41264d..bdd1356 100644
--- a/helloWorld/helloWorld.js
+++ b/helloWorld/helloWorld.js
@@ -1,5 +1,5 @@
 const helloWorld = function() {
-  return ''
+  return 'Yello Wold!'
 }
 
 module.exports = helloWorld
diff --git a/helloWorld/helloWorld.spec.js b/helloWorld/helloWorld.spec.js
index c98e534..50e69dd 100644
--- a/helloWorld/helloWorld.spec.js
+++ b/helloWorld/helloWorld.spec.js
@@ -1,7 +1,14 @@
+const expect = require('expect');
 const helloWorld = require('./helloWorld');
 
-describe('Hello World', function() {
-  it('says hello world', function() {
-    expect(helloWorld()).toEqual('Hello, World!');
-  });
+// describe('Hello World', function() {
+//   it('says hello world', function() {
+//     expect(helloWorld()).toEqual('Hello, World!');
+//   });
+// });
+
+describe('helloWorld', function() {
+  test('says "Hello, World!"', function() {
+    expect(helloWorld()).toBe("Hello, World!");
+  })
 });
diff --git a/leapYears/leapYears.spec.js b/leapYears/leapYears.spec.js
index 2887fe5..5c3a36b 100644
--- a/leapYears/leapYears.spec.js
+++ b/leapYears/leapYears.spec.js
@@ -1,4 +1,5 @@
-const leapYears = require("./leapYears");
+const expect = require('expect');
+const leapYears = require('./leapYears')
 
 describe('leapYears', function() {
   it('works with non century years', function() {
diff --git a/palindromes/palindromes.spec.js b/palindromes/palindromes.spec.js
index fcd4b6f..0df7b17 100644
--- a/palindromes/palindromes.spec.js
+++ b/palindromes/palindromes.spec.js
@@ -1,4 +1,4 @@
-const palindromes = require("./palindromes");
+const expect = require('expect');const palindromes = require('./palindromes')
 
 describe('palindromes', function() {
   it('works with single words', function() {
diff --git a/pig_latin/pigLatin.spec.js b/pig_latin/pigLatin.spec.js
index f6c0a47..8bf0952 100644
--- a/pig_latin/pigLatin.spec.js
+++ b/pig_latin/pigLatin.spec.js
@@ -1,4 +1,4 @@
-//  Topics
+const expect = require("expect");//  Topics
 
 //  * modules
 //  * strings
diff --git a/removeFromArray/removeFromArray.spec.js b/removeFromArray/removeFromArray.spec.js
index 879d8b6..32a498b 100644
--- a/removeFromArray/removeFromArray.spec.js
+++ b/removeFromArray/removeFromArray.spec.js
@@ -1,4 +1,4 @@
-const removeFromArray = require("./removeFromArray");
+const expect = require('expect');const removeFromArray = require('./removeFromArray')
 
 describe('removeFromArray', function() {
   it('removes a single value', function() {