diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
index 4070d32767..f4fc206d27 100644
--- a/01 - JavaScript Drum Kit/index-START.html	
+++ b/01 - JavaScript Drum Kit/index-START.html	
@@ -59,6 +59,25 @@
 
 <script>
 
+  function plarySound(event) {
+    const audio = document.querySelector(`audio[data-key='${event.keyCode}']`);
+    const key = document.querySelector(`.key[data-key='${event.keyCode}']`);
+    if (!audio) return; // stop the function from running all together
+    audio.currentTime = 0; // rewind to the start
+    audio.play();
+    key.classList.add('playing');
+  }
+
+
+  function removeTransition(event) {
+    if (event.propertyName !== 'transform') return; //skip if it's not a transform
+    this.classList.remove('playing');
+  }
+
+  const keys = document.querySelectorAll('.key');
+  keys.forEach(key => key.addEventListener('transitionend', removeTransition));
+  window.addEventListener('keydown', plarySound);
+
 </script>
 
 
diff --git a/02 - JS + CSS Clock/index-START.html b/02 - JS + CSS Clock/index-START.html
index 240705d8fe..0e6cd7f249 100644
--- a/02 - JS + CSS Clock/index-START.html	
+++ b/02 - JS + CSS Clock/index-START.html	
@@ -61,13 +61,37 @@
       background:black;
       position: absolute;
       top:50%;
+      transform-origin: 100%;
+      transform: rotate(90deg);
+      transition: all 0.05s;
+      transition-timing-function: cubic-bezier(0.82,-0.82, 0, 3.13);
     }
 
   </style>
 
   <script>
+  const secondHand = document.querySelector('.second-hand');
+  const minuteHand = document.querySelector('.min-hand');
+  const hourHand = document.querySelector('.hour-hand');
 
+  function setDate() {
+    const now = new Date();
+    const seconds = now.getSeconds();
+    const secondDegrees = seconds*6 + 90; // (seconds / 60) * 360 degrees
+    secondHand.style.transform = `rotate(${secondDegrees}deg)`;
 
+    const minutes = now.getMinutes();
+    const minutesDegrees = minutes*6 + 90; // (minutes / 60) * 360 degrees
+    minuteHand.style.transform = `rotate(${minutesDegrees}deg)`;
+
+    const hours = now.getHours();
+    const hoursDegrees = hours*30 + 90; // (hours / 12) * 360 degrees
+    hourHand.style.transform = `rotate(${hoursDegrees}deg)`;
+
+    console.log(`${hours}:${minutes}:${seconds}`);
+  }
+
+  setInterval(setDate, 1000);
   </script>
 </body>
 </html>
diff --git a/03 - CSS Variables/index-START.html b/03 - CSS Variables/index-START.html
index bf0f33e3ba..4cc870e736 100644
--- a/03 - CSS Variables/index-START.html	
+++ b/03 - CSS Variables/index-START.html	
@@ -21,7 +21,21 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
   <img src="https://source.unsplash.com/7bwQXzbF6KE/800x500">
 
   <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
     */
@@ -53,6 +67,18 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
   </style>
 
   <script>
+    // NOTE: you can reference any element and existing variables will take
+    // precedence based on the css cascading/priority
+    // document.querySelector('h2').style.setProperty('--base', 'blue')
+    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 6e28e357d0..ae269854f9 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -27,29 +27,62 @@
 
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    console.table(inventors.filter(inventor => inventor.year > 1500 && inventor.year < 1600));
 
     // Array.prototype.map()
     // 2. Give us an array of the inventory first and last names
+    console.log(inventors.map(({first, last}) => `${first} ${last}`));
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    console.table(inventors.sort((x, y) => x.year > y.year ? 1 : -1));
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
+    console.log(inventors.reduce(((acc, {year, passed}) => acc += (passed - year)), 0));
 
     // 5. Sort the inventors by years lived
+    console.table(inventors.sort((a,b) => {
+      const yearsA = a.passed - a.year;
+      const yearsB = b.passed - b.year;
+      return yearsA > yearsB ? -1 : 1;
+    }));
 
     // 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 = [...category.querySelectorAll('a')];
+    // const links = Array.from(category.querySelectorAll('a'));
+    // const de = links
+    //              .map((link) => link.textContent)
+    //              // .filter((text) => text.match(/de/));
+    //              .filter((text) => text.includes('de'));
+    // console.log(de);
 
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    const alpha = people.sort((a, b) => {
+      const [aLast, aFirst] = a.split(', ');
+      const [bLast, bFirst] = b.split(', ');
+      return aLast > bLast ? 1 : -1;
+    });
+    console.log(alpha);
+    // this doesn't return the whole name:
+    // const lastNames = people.map((name) => name.split(',')[0]);
+    // console.log(lastNames.sort());
 
     // 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 dataSum = data.reduce((acc, item) => {
+      if (!acc[item]) {
+        acc[item] = 0;
+      }
+      acc[item]++;
+      return acc;
+    }, {});
+    console.log(dataSum);
   </script>
 </body>
 </html>
diff --git a/05 - Flex Panel Gallery/index-START.html b/05 - Flex Panel Gallery/index-START.html
index e1d643ad5c..8413a072fc 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 +60,23 @@
       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 +91,7 @@
 
     .panel.open {
       font-size:40px;
+      flex: 5;
     }
 
     .cta {
@@ -107,7 +131,20 @@
   </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..49e3e3a907 100644
--- a/06 - Type Ahead/index-START.html	
+++ b/06 - Type Ahead/index-START.html	
@@ -17,6 +17,46 @@
 <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(({ city, state }) => {
+    const regex = new RegExp(wordToMatch, 'gi');
+    return city.match(regex) || 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">${this.value}</span>`);
+    const stateName = place.state.replace(regex, `<span class="hl">${this.value}</span>`);
+
+    return `
+      <li>
+        <span class="name">${cityName}, ${stateName}</span>
+        <span class="population">${numberWithCommas(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/08 - Fun with HTML5 Canvas/index-START.html b/08 - Fun with HTML5 Canvas/index-START.html
index 37c148df07..4e41a77018 100644
--- a/08 - Fun with HTML5 Canvas/index-START.html	
+++ b/08 - Fun with HTML5 Canvas/index-START.html	
@@ -7,6 +7,56 @@
 <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 = 1;
+  // ctx.globalCompositeOperation = 'multiply';
+
+  let isDrawing = false;
+  let lastX = 0;
+  let lastY = 0;
+  let hue = 0;
+  let direction = true;
+
+  function draw(e) {
+    if (!isDrawing) return; // stop the function from running when they are not mouse down
+    // console.log(e);
+    ctx.strokeStyle = `hsl(${hue}, 100%, 50%)`;
+    ctx.beginPath();
+    ctx.moveTo(lastX, lastY);
+    ctx.lineTo(e.offsetX, e.offsetY);
+    ctx.stroke();
+    [lastX, lastY] = [e.offsetX, e.offsetY];
+    hue++;
+    if (hue >= 360) {
+      hue = 0;
+    }
+
+    if (ctx.lineWidth >= 100 || ctx.lineWidth <= 1) {
+      direction = !direction;
+    }
+
+    if (direction) {
+      ctx.lineWidth++;
+    } else {
+      ctx.lineWidth--;
+    }
+  }
+
+  canvas.addEventListener('mousedown', (e) => {
+    isDrawing = true;
+    [lastX, lastY] = [e.offsetX, e.offsetY];
+  });
+  canvas.addEventListener('mousemove', draw);
+  canvas.addEventListener('mouseup', () => isDrawing = false);
+  canvas.addEventListener('mouseout', () => isDrawing = false);
 </script>
 
 <style>