diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
index 4070d32767..aa2a53ea5e 100644
--- a/01 - JavaScript Drum Kit/index-START.html	
+++ b/01 - JavaScript Drum Kit/index-START.html	
@@ -59,8 +59,26 @@
 
 <script>
 
-</script>
+  function playSound(e){
+      const audio = document.querySelector(`audio[data-key="${e.keyCode}"]`);
+      const key = document.querySelector(`.key[data-key="${e.keyCode}"]`);
+      if (!audio) return;
+      audio.currentTime = 0;
+      audio.play();
+      key.classList.add('playing');
+  }
+
+  function removeTransition(e) {
+    if(e.propertyName !== 'transform') return;
+    this.classList.remove('playing');
+  }
+
+  const keys = document.querySelectorAll('.key');
+  keys.forEach(key => key.addEventListener('transitionend', removeTransition));
 
+  window.addEventListener('keydown', playSound);
+
+</script>
 
 </body>
 </html>
diff --git a/02 - JS + CSS Clock/index-START.html b/02 - JS + CSS Clock/index-START.html
index 2712384201..2172896307 100644
--- a/02 - JS + CSS Clock/index-START.html	
+++ b/02 - JS + CSS Clock/index-START.html	
@@ -61,12 +61,36 @@
       background:black;
       position: absolute;
       top:50%;
+      transform-origin: 100%;
+      transform: rotate(90deg);
+      transition: all 0.05s;
+      transition-timing-function: cubic-bezier(.1, 2.7, 0.58, 1);
     }
 
   </style>
 
   <script>
 
+  const secondHand = document.querySelector('.second-hand');
+  const minHand = document.querySelector('.min-hand');
+  const hourHand = document.querySelector('.hour-hand');
+
+  function setDate() {
+    const now = new Date();
+    const seconds = now.getSeconds();
+    const secondsDegrees = ((seconds/60) * 360) + 90;
+    secondHand.style.transform = `rotate(${secondsDegrees}deg)`;
+
+    const mins = now.getMinutes();
+    const minsDegrees = ((mins/60) * 360) + 90;
+    minHand.style.transform = `rotate(${minsDegrees}deg)`;
+
+    const hours = now.getHours();
+    const hoursDegrees = ((hours/12) * 360) + 90;
+    hourHand.style.transform = `rotate(${hoursDegrees}deg)`;
+  }
+
+  setInterval(setDate, 1000);
 
   </script>
 </body>
diff --git a/03 - CSS Variables/index-START.html b/03 - CSS Variables/index-START.html
index 7171607a8b..fa2cb8fd58 100644
--- a/03 - CSS Variables/index-START.html	
+++ b/03 - CSS Variables/index-START.html	
@@ -22,6 +22,22 @@ <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 +64,16 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
   </style>
 
   <script>
+
+  const inputs = document.querySelectorAll('.controls input'); // nodelist
+
+  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 4162bce339..ca018b7818 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -31,31 +31,75 @@
 
     const people = ['Beck, Glenn', 'Becker, Carl', 'Beckett, Samuel', 'Beddoes, Mick', 'Beecher, Henry', 'Beethoven, Ludwig', 'Begin, Menachem', 'Belloc, Hilaire', 'Bellow, Saul', 'Benchley, Robert', 'Benenson, Peter', 'Ben-Gurion, David', 'Benjamin, Walter', 'Benn, Tony', 'Bennington, Chester', 'Benson, Leana', 'Bent, Silas', 'Bentsen, Lloyd', 'Berger, Ric', 'Bergman, Ingmar', 'Berio, Luciano', 'Berle, Milton', 'Berlin, Irving', 'Berne, Eric', 'Bernhard, Sandra', 'Berra, Yogi', 'Berry, Halle', 'Berry, Wendell', 'Bethea, Erin', 'Bevan, Aneurin', 'Bevel, Ken', 'Biden, Joseph', 'Bierce, Ambrose', 'Biko, Steve', 'Billings, Josh', 'Biondo, Frank', 'Birrell, Augustine', 'Black Elk', 'Blair, Robert', 'Blair, Tony', 'Blake, William'];
 
-    // Array.prototype.filter()
+    // Array.prototype.filter() does something to each item in an array
     // 1. Filter the list of inventors for those who were born in the 1500's
+    const fifteen = inventors.filter(inventor => (inventor.year >= 1500 && inventor.year < 1600))
 
-    // Array.prototype.map()
-    // 2. Give us an array of the inventors' first and last names
+    console.table(fifteen);
 
+    // Array.prototype.map() // takes an array, does something with it, returns a new array of same length
+    // 2. Give us an array of the inventors' first and last names
+    const fullNames = inventors.map(inventor => `${inventor.first} ${inventor.last}`);
+    console.log(fullNames);
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
 
+    // const ordered = inventors.sort(function(a, b) {
+    //   if (a.year > b.year) {
+    //     return 1;
+    //   } else {
+    //     return -1;
+    //   }
+    // });
+
+    const ordered = inventors.sort((a,b) => a.year > b.year ? 1 : -1);
+
+    console.log(ordered);
+
     // 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(function(a,b) {
+      const nextGuy = a.passed - a.year;
+      const lastGuy = b.passed - b.year;
+      return lastGuy > nextGuy ? -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 a');
+    // const links = Array.from(category.querySelectorAll('a'));
+    //
+    // const de = links
+    //   .map(link => link.textContent)
+    //   .filter(streetName => streetName.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(function(obj, item) {
+      if (!obj[item]){
+        obj[item] = 0;
+      }
+      obj[item]++;
+      return obj;
+    }, {});
+    console.log(transportation);
   </script>
 </body>
 </html>
diff --git a/05 - Flex Panel Gallery/index-START.html b/05 - Flex Panel Gallery/index-START.html
index e1d643ad5c..f3ee390637 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.open-active > *:first-child {
+      transform: translateY(0);
+    }
+
+    .panel > *:last-child {
+      transform: translateY(100%);
+    }
+
+    .panel.open-active > *:last-child {
+      transform: translateY(0);
     }
 
     .panel p {
@@ -68,6 +94,7 @@
 
     .panel.open {
       font-size:40px;
+      flex: 5;
     }
 
     .cta {
@@ -107,7 +134,21 @@
   </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');
+    }
+
+  }
 
+  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..154c6a815e 100644
--- a/06 - Type Ahead/index-START.html	
+++ b/06 - Type Ahead/index-START.html	
@@ -17,6 +17,39 @@
 <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(place => {
+    const regex = new RegExp(wordToMatch, 'gi');
+    return place.city.match(regex)
+  });
+}
+
+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">${this.value}</span>`);
+    return `
+    <li>
+    <span class="name">${place.city}, ${place.state}</span>
+    <span class="population">${place.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 206ec31aa0..33ce90a7b2 100644
--- a/07 - Array Cardio Day 2/index-START.html	
+++ b/07 - Array Cardio Day 2/index-START.html	
@@ -26,16 +26,46 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19?
+
+    // Shortest Version
+
+    const isAdult = people.some(person => ((new Date()).getFullYear()) - person.year >=19);
+
+    // Shorter Version
+
+    // const isAdult = people.some(person => {
+    //     const currentYear = (new Date()).getFullYear();
+    //     return currentYear - person.year >=19;
+    // })
+
+    // Long Version
+
+    // const isAdult = people.some(function(person) {
+    //   const currentYear = (new Date()).getFullYear();
+    //   if (currentYear - person.year >=19) {
+    //     return true;
+    //   }
+    // });
+
+    console.log({isAdult});
     // Array.prototype.every() // is everyone 19?
 
+    const allAdults = people.every(person => ((new Date()).getFullYear()) - person.year >=19);
+
+    console.log(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 index = comments.findIndex(comment => comment.id === 823423);
+    comments.splice(index, 1);
+    console.log(comments);
   </script>
 </body>
 </html>