diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
index 4070d32767..ff4b449b3a 100644
--- a/01 - JavaScript Drum Kit/index-START.html	
+++ b/01 - JavaScript Drum Kit/index-START.html	
@@ -58,6 +58,30 @@
   <audio data-key="76" src="sounds/tink.wav"></audio>
 
 <script>
+    
+    function playKey(e) {
+        const playedKey = document.querySelector(`div[data-key="${e.keyCode}"]`);
+        if (!playedKey) return;
+        
+        // Add 'playing' class
+        playedKey.classList.add('playing');
+
+        // Play corresponding audio
+        const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
+        audio.currentTime = 0;
+        audio.play();
+    };
+    
+    function removeTransition(e) {
+        if (e.propertyName !== 'transform') return;
+        // Remove 'playing' class
+        this.classList.remove('playing'); 
+    }
+    
+    // Event Listeners
+    const keys = document.querySelectorAll('.key');
+    keys.forEach(key => key.addEventListener('transitionend', removeTransition));
+    window.addEventListener('keydown', playKey); 
 
 </script>
 
diff --git a/02 - JS + CSS Clock/index-START.html b/02 - JS + CSS Clock/index-START.html
index 2712384201..669f7e8e9d 100644
--- a/02 - JS + CSS Clock/index-START.html	
+++ b/02 - JS + CSS Clock/index-START.html	
@@ -61,11 +61,37 @@
       background:black;
       position: absolute;
       top:50%;
+      transform-origin: 100%;
+      transform: rotate(90deg);
+      transition: all 0.0 5s;
+      transition-timing-function: cubic-bezier(0.1, 2.7, 0.58, 1);
     }
 
   </style>
 
   <script>
+  
+  function setDate() {
+      const now = new Date();
+      
+      // second hand
+      const seconds = now.getSeconds();
+      const secondsDegrees = (seconds / 60) * 360;
+      document.querySelector('.second-hand').style.transform = `rotate(${secondsDegrees + 90}deg)`;
+      
+      // minute hand
+      const minutes = now.getMinutes();
+      const minutesDegrees = (minutes / 60) * 360;
+      document.querySelector('.min-hand').style.transform = `rotate(${minutesDegrees + 90}deg)`;
+      
+      // hour hand
+      const hours = now.getHours();
+      const hourDegrees = (hours / 12) * 360;
+      document.querySelector('.hour-hand').style.transform = `rotate(${hourDegrees + 90}deg)`;
+      
+  }
+  
+  setInterval(setDate, 1000);
 
 
   </script>
diff --git a/03 - CSS Variables/index-START.html b/03 - CSS Variables/index-START.html
index 7171607a8b..e0064769af 100644
--- a/03 - CSS Variables/index-START.html	
+++ b/03 - CSS Variables/index-START.html	
@@ -22,6 +22,23 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
 
   <style>
 
+    :root {
+        --base: #ffc600;
+        --spacing: 10px;
+        --blur: 10px;
+    }
+    
+    img {
+        padding: var(--spacing);
+        background: var(--base);
+        filter: blur(var(--blur));
+    }
+    
+    .hl {
+        color: var(--base);
+    }
+
+
     /*
       misc styles, nothing to do with CSS variables
     */
@@ -48,6 +65,16 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
   </style>
 
   <script>
+  
+  const inputs = document.querySelectorAll('.controls input');
+  
+  function handleUpdate() {
+      const suffix = this.dataset.sizing || '';      
+      document.documentElement.style.setProperty(`--${this.name}`, this.value + suffix);
+  }
+  
+  inputs.forEach(input => input.addEventListener('change', handleUpdate));
+  inputs.forEach(input => input.addEventListener('mousemove', handleUpdate));
   </script>
 
 </body>
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
index 317883a4c1..6130faf69c 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -31,28 +31,81 @@
 
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    const fifteen = inventors.filter(inventor => {
+        return inventor.year >= 1500 && inventor.year < 1600;
+    });
+    // console.table(fifteen);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors' first and last names
+    const fullNames = inventors.map(inventor => {
+        return `${inventor.first} ${inventor.last}`;
+    });
+    // console.log(fullNames);
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    const birthDate = inventors.sort(function(a, b) {
+        if (a.year > b.year) {
+            return 1;
+        }
+        
+        if (a.year < b.year) {
+            return -1;
+        }
+        
+        // a must be equal to b
+        return 0;
+    });
+    // console.table(birthDate);
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
+    const totalYears = inventors.reduce((total, inventor) => {
+        return total += (inventor.passed - inventor.year);
+    }, 0);
+    // console.log(totalYears);
 
     // 5. Sort the inventors by years lived
+    const oldest = inventors.sort((a, b) => {
+        const lastGuy = a.passed - a.year;
+        const thisGuy = b.passed - b.year;
+        return lastGuy > thisGuy ? -1 : 1;
+    });
+    // console.table(oldest);
 
     // 6. create a list of Boulevards in Paris that contain 'de' anywhere in the name
     // https://en.wikipedia.org/wiki/Category:Boulevards_in_Paris
-
+    // const category = document.querySelector('.mw-category');
+    // const links = Array.from(category.querySelectorAll('a'));
+    // 
+    // const de = links
+    //             .map(link => link.textContent)
+    //             .filter(street => street.includes('de'));
+    
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    const alpha = people.sort((lastOne, nextOne) => {
+        const [aLast, aFirst] = lastOne.split(', ');
+        const [bLast, bFirst] = nextOne.split(', ');
+        return aLast > bLast ? 1 : -1;
+    });
+    // console.log(alpha);
 
     // 8. Reduce Exercise
     // Sum up the instances of each of these
     const data = ['car', 'car', 'truck', 'truck', 'bike', 'walk', 'car', 'van', 'bike', 'walk', 'car', 'van', 'car', 'truck' ];
+    
+    const transportation = data.reduce((obj, item) => {
+        if (!obj[item]) {
+            obj[item] = 0;
+        }
+        
+        obj[item]++
+        return obj;
+    }, {});
+    console.log(transportation);
 
   </script>
 </body>
diff --git a/05 - Flex Panel Gallery/index-START.html b/05 - Flex Panel Gallery/index-START.html
index e1d643ad5c..24f6555661 100644
--- a/05 - Flex Panel Gallery/index-START.html	
+++ b/05 - Flex Panel Gallery/index-START.html	
@@ -24,6 +24,7 @@
     .panels {
       min-height:100vh;
       overflow: hidden;
+      display: flex;
     }
 
     .panel {
@@ -41,6 +42,11 @@
       font-size: 20px;
       background-size:cover;
       background-position:center;
+      flex: 1;
+      justify-content: center;
+      align-items: center;
+      display: flex;
+      flex-direction: column;
     }
 
 
@@ -54,6 +60,26 @@
       margin:0;
       width: 100%;
       transition:transform 0.5s;
+      flex: 1 0 auto;
+      display: flex;
+      justify-content: center;
+      align-items: center;
+    }
+    
+    .panel > *:first-child {
+        transform: translateY(-100%);
+    }
+    
+    .panel > *:last-child {
+        transform: translateY(100%);
+    }
+    
+    .panel.open-active > *:first-child {
+        transform: translateY(0);
+    }
+    
+    .panel.open-active > *:last-child {
+        transform: translateY(0);
     }
 
     .panel p {
@@ -67,6 +93,7 @@
     }
 
     .panel.open {
+      flex: 5; 
       font-size:40px;
     }
 
@@ -107,6 +134,22 @@
   </div>
 
   <script>
+    const panels = document.querySelectorAll('.panel');
+    
+    function toggleOpen() {
+        this.classList.toggle('open');
+    }
+    
+    function toggleActive(e) {
+        if (e.propertyName.includes('flex')) {
+            this.classList.toggle('open-active');
+        }
+    }
+    
+    console.log(panels);
+    
+    panels.forEach(panel => panel.addEventListener('click', toggleOpen));
+    panels.forEach(panel => panel.addEventListener('transitionend', toggleActive));    
 
   </script>
 
diff --git a/06 - Type Ahead/index-START.html b/06 - Type Ahead/index-START.html
index 1436886918..79667cf730 100644
--- a/06 - Type Ahead/index-START.html	
+++ b/06 - Type Ahead/index-START.html	
@@ -17,6 +17,47 @@
 <script>
 const endpoint = 'https://gist.githubusercontent.com/Miserlou/c5cd8364bf9b2420bb29/raw/2bf258763cdddd704f8ffd3ea9a3e81d25e2c6f6/cities.json';
 
+const cities = [];
+
+fetch(endpoint)
+    .then(blob => blob.json())
+    .then(data => cities.push(...data));
+        
+function findMatches(wordToMatch, cities) {
+    return cities.filter(function(cityInfo) {
+        const regex = new RegExp(wordToMatch, 'gi');
+        return cityInfo.city.match(regex) || cityInfo.state.match(regex);
+    });
+}
+
+function numberWithCommas(x) {
+    return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',');
+}
+
+function displayMatches() {
+    const matchArray = findMatches(this.value, cities);
+    const html = matchArray.map(place => {
+        const regex = new RegExp(this.value, 'gi');
+        const cityName = place.city.replace(regex, `<span class="hl">${this.value}</span>`);
+        const state = place.state.replace(regex, `<span class="hl">${this.value}</span>`);
+        const population = numberWithCommas(place.population);
+        
+        return `
+            <li>
+                <span class="name">${cityName}, ${state}</span>
+                <span class="population">${population}</span>
+            </li>
+        `;
+    }).join('');
+    suggestions.innerHTML = html;
+}
+
+const searchInput = document.querySelector('.search');
+const suggestions = document.querySelector('.suggestions');
+
+searchInput.addEventListener('change', displayMatches);
+searchInput.addEventListener('keyup', displayMatches);
+
 </script>
   </body>
 </html>
diff --git a/07 - Array Cardio Day 2/index-START.html b/07 - Array Cardio Day 2/index-START.html
index 969566ff78..7859e57ba0 100644
--- a/07 - Array Cardio Day 2/index-START.html	
+++ b/07 - Array Cardio Day 2/index-START.html	
@@ -26,15 +26,33 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19 or older?
+    const isAdult = people.some(function(person) {
+        const currentYear = (new Date()).getFullYear();
+        return currentYear - person.year >= 19;
+    });
+    
     // Array.prototype.every() // is everyone 19 or older?
+    const allAdults = people.every(function(person) {
+        const currentYear = (new Date()).getFullYear();
+        return currentYear - person.year >= 19;
+    });
+    
+    console.log({isAdult, allAdults});
 
     // Array.prototype.find()
     // Find is like filter, but instead returns just the one you are looking for
     // find the comment with the ID of 823423
+    const comment = comments.find(comment => comment.id === 823423);
+    
+    console.log({comment});
 
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
+    const indexOfComment = comments.findIndex(comment => comment.id === 823423);    
+    comments.splice(indexOfComment, 1);
+    
+    console.log(comments);
 
   </script>
 </body>
diff --git a/08 - Fun with HTML5 Canvas/index-START.html b/08 - Fun with HTML5 Canvas/index-START.html
index 37c148df07..df2a015d71 100644
--- a/08 - Fun with HTML5 Canvas/index-START.html	
+++ b/08 - Fun with HTML5 Canvas/index-START.html	
@@ -7,6 +7,47 @@
 <body>
 <canvas id="draw" width="800" height="800"></canvas>
 <script>
+const canvas = document.querySelector('#draw');
+const ctx = canvas.getContext('2d');
+canvas.width = window.innerWidth;
+canvas.height = window.innerHeight;
+ctx.strokeStyle = '#BADA55';
+ctx.lineJoin = 'round';
+ctx.lineCap = 'round';
+ctx.lineWidth = 30; 
+
+let isDrawing = false;
+let lastX = 0;
+let lastY = 0;
+let hue = 0; 
+let direction = true;
+
+function draw(e) {
+    if (!isDrawing) return;
+    ctx.strokeStyle = `hsl(${hue}, 100%, 50%)`;
+    ctx.beginPath();
+    // start from
+    ctx.moveTo(lastX, lastY);
+    // go to
+    ctx.lineTo(e.offsetX, e.offsetY);
+    ctx.stroke(); 
+    
+    [lastX, lastY] = [e.offsetX, e.offsetY];
+    hue++
+    
+    direction ? ctx.lineWidth++ : ctx.lineWidth--;
+    
+    if (ctx.lineWidth >= 100 || ctx.lineWidth <= 1) direction = !direction;
+}
+
+canvas.addEventListener('mousemove', draw);
+canvas.addEventListener('mousedown', (e) => {
+    isDrawing = true;
+    [lastX, lastY] = [e.offsetX, e.offsetY]    
+});
+canvas.addEventListener('mouseup', () => isDrawing = false);
+canvas.addEventListener('mouseout', () => isDrawing = false);
+
 </script>
 
 <style>
diff --git a/10 - Hold Shift and Check Checkboxes/index-START.html b/10 - Hold Shift and Check Checkboxes/index-START.html
index eb7ed310bb..45b7392c4c 100644
--- a/10 - Hold Shift and Check Checkboxes/index-START.html	
+++ b/10 - Hold Shift and Check Checkboxes/index-START.html	
@@ -104,6 +104,32 @@
   </div>
 
 <script>
+const checkboxes = document.querySelectorAll('.inbox input[type="checkbox"]');
+
+let lastChecked;
+
+function handleCheck(e) {
+    // Check if they had the shift key down
+    // AND check that they are checking it
+    let inBetween = false;
+    if (e.shiftKey && this.checked) {
+        // loop over every single checkbox
+        checkboxes.forEach(checkbox => {
+            if (checkbox === this || checkbox === lastChecked) {
+                inBetween = !inBetween;
+            }
+            
+            if (inBetween) {
+                checkbox.checked = true;
+            }
+        });
+    }
+
+    lastChecked = this;
+}
+
+checkboxes.forEach(checkbox => checkbox.addEventListener('click', handleCheck));
+
 </script>
 </body>
 </html>
diff --git a/11 - Custom Video Player/scripts.js b/11 - Custom Video Player/scripts.js
index e69de29bb2..b9270c68a1 100644
--- a/11 - Custom Video Player/scripts.js	
+++ b/11 - Custom Video Player/scripts.js	
@@ -0,0 +1,54 @@
+/* Get our elements */
+const player = document.querySelector('.player');
+const video = player.querySelector('.viewer');
+const progress = player.querySelector('.progress');
+const progressBar = player.querySelector('.progress__filled');
+const toggle = player.querySelector('.toggle');
+const skipButtons = player.querySelectorAll('[data-skip]');
+const ranges = player.querySelectorAll('.player__slider');
+
+/* Build out functions */
+function togglePlay() {
+    const method = video.paused ? 'play' : 'pause';
+    video[method]();
+}
+
+function updateButton() {
+    const icon = this.paused ? '►' : '❚ ❚';
+    toggle.textContent = icon;
+}
+
+function skip() {
+    video.currentTime += parseFloat(this.dataset.skip);
+}
+
+function handleRangeUpdate() {
+    video[this.name] = this.value;
+}
+
+function handleProgress() {
+    const percent = (video.currentTime / video.duration) * 100;
+    progressBar.style. flexBasis = `${percent}%`;
+}
+
+function scrub(e) {
+    const scrubTime = (e.offsetX / progress.offsetWidth) * video.duration;
+    video.currentTime = scrubTime;
+}
+
+/* Hook up the event listeners */
+video.addEventListener('click', togglePlay);
+video.addEventListener('play', updateButton);
+video.addEventListener('pause', updateButton);
+video.addEventListener('timeupdate', handleProgress);
+
+toggle.addEventListener('click', togglePlay);
+skipButtons.forEach(button => button.addEventListener('click', skip));
+ranges.forEach(range => range.addEventListener('change', handleRangeUpdate));
+ranges.forEach(range => range.addEventListener('mousemove', handleRangeUpdate));
+
+let mousedown = false;
+progress.addEventListener('click', scrub);
+progress.addEventListener('mousemove', scrub);
+progress.addEventListener('mousedown', () => mousedown = true);
+