diff --git a/01 - JavaScript Drum Kit/index-START.html b/01 - JavaScript Drum Kit/index-START.html
index 4070d32767..2f807eadb5 100644
--- a/01 - JavaScript Drum Kit/index-START.html	
+++ b/01 - JavaScript Drum Kit/index-START.html	
@@ -59,6 +59,26 @@
 
 <script>
 
+  function rollbackTransition(e) {
+    this.classList.remove('playing');
+  }
+
+  window.addEventListener('keydown', function(e) {
+      const keyPressed = e.keyCode;
+      const drumAudio = document.querySelector(`audio[data-key="${keyPressed}"]`);
+      if (drumAudio) {
+        drumAudio.currentTime = 0;
+        drumAudio.play();
+        const key = document.querySelector(`.key[data-key="${keyPressed}"]`);
+        key.classList.add('playing');
+
+        const keys = document.querySelectorAll('.key')
+        keys.forEach(key => key.addEventListener('transitionend', rollbackTransition));
+      }
+  });
+
+
+
 </script>
 
 
diff --git a/01 - JavaScript Drum Kit/style.css b/01 - JavaScript Drum Kit/style.css
index 3e0a320b37..175e648535 100644
--- a/01 - JavaScript Drum Kit/style.css	
+++ b/01 - JavaScript Drum Kit/style.css	
@@ -1,6 +1,6 @@
 html {
   font-size: 10px;
-  background:url(http://i.imgur.com/b9r5sEL.jpg) bottom center;
+  background:url(https://chorus.fm/wp-content/uploads/2016/04/fleetfoxes.jpg) bottom center;
   background-size: cover;
 }
 body,html {
diff --git a/02 - JS + CSS Clock/Memo.txt b/02 - JS + CSS Clock/Memo.txt
new file mode 100644
index 0000000000..67c2d7cc85
--- /dev/null
+++ b/02 - JS + CSS Clock/Memo.txt	
@@ -0,0 +1,12 @@
+1. CSS clock hand:
+  - use transform: rotate() in CSS file
+  - by default the object rotates in the middle of the object: use transform-origin: x%; to move the origin on the X axis.
+  - set default rotate at 90° to have them face upwards
+  - set a transition for the animation not to be too hard: transition: all 0.5s;
+  - use a transition-timing-funtion to update the way the object moves
+
+2. JS:
+  - setInterval to set the interval at which the hands should move
+  - A function to set the date. You have a date you find which second you are currently in then you transform into degress (make sure that you add 90° to the total because we added that to the CSS)
+  - then you add the style transform rotate by variable degrees.
+
diff --git a/02 - JS + CSS Clock/index-START.html b/02 - JS + CSS Clock/index-START.html
index 2712384201..0b0a5455a3 100644
--- a/02 - JS + CSS Clock/index-START.html	
+++ b/02 - JS + CSS Clock/index-START.html	
@@ -61,13 +61,42 @@
       background:black;
       position: absolute;
       top:50%;
+      transform-origin: 100%;
+      transform: rotate(90deg);
+      transition: all 0.1s;
+      transition-timing-function: cubic-bezier(0.54, 2.52, 0.96, 1.09);
     }
 
   </style>
 
   <script>
+      const sec_hand = document.querySelector('.second-hand')
+      const min_hand = document.querySelector('.min-hand')
+      const hour_hand = document.querySelector('.hour-hand')
 
 
+    function setDate() {
+      var date = new Date();
+
+      // SECONDS
+      var seconds = date.getSeconds();
+      var secondsDegrees = ((seconds / 60) * 360) + 90;
+      sec_hand.style.transform = `rotate(${secondsDegrees}deg)`;
+
+      // MINUTES
+      var minutes = date.getMinutes();
+      var minutesDegrees = ((minutes / 60) * 360) + 90;
+      min_hand.style.transform = `rotate(${minutesDegrees}deg)`;
+
+      // HOUR
+      var hour = date.getHours();
+      var hourDegrees = ((hour / 12) * 360) + 90;
+      hour_hand.style.transform = `rotate(${hourDegrees}deg)`;
+
+    }
+
+    window.setInterval(setDate, 1000);
+
   </script>
 </body>
 </html>
diff --git a/03 - CSS Variables/index-START.html b/03 - CSS Variables/index-START.html
index 7171607a8b..6b9326d615 100644
--- a/03 - CSS Variables/index-START.html	
+++ b/03 - CSS Variables/index-START.html	
@@ -22,9 +22,21 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
 
   <style>
 
-    /*
-      misc styles, nothing to do with CSS variables
-    */
+    :root {
+      --base: #ffc600;
+      --spacing: 10px;
+      --blur: 10px;
+    }
+
+    img {
+      background-color: var(--base);
+      padding: var(--spacing);
+      filter: blur(var(--blur));
+    }
+
+    .hl {
+      color: var(--base);
+    }
 
     body {
       text-align: center;
@@ -47,7 +59,19 @@ <h2>Update CSS Variables with <span class='hl'>JS</span></h2>
     }
   </style>
 
+
   <script>
+    const inputsAll = document.querySelectorAll('input');
+
+    function adaptToChange() {
+      let suffix = this.dataset.sizing || '';
+      document.documentElement.style.setProperty(`--${this.name}`, this.value+suffix);
+    }
+
+    inputsAll.forEach(input => {
+      input.addEventListener('change', adaptToChange);
+      input.addEventListener('mousemove', adaptToChange);
+    });
   </script>
 
 </body>
diff --git a/04 - Array Cardio Day 1/index-START.html b/04 - Array Cardio Day 1/index-START.html
index 4162bce339..852e0d6afc 100644
--- a/04 - Array Cardio Day 1/index-START.html	
+++ b/04 - Array Cardio Day 1/index-START.html	
@@ -33,28 +33,59 @@
 
     // Array.prototype.filter()
     // 1. Filter the list of inventors for those who were born in the 1500's
+    let fiteen = inventors.filter(inventor => inventor.year >= 1500 && inventor.year < 1600);
+    console.table(fiteen);
 
     // Array.prototype.map()
     // 2. Give us an array of the inventors' first and last names
+    let fullNames = inventors.map(inventor => inventor.first + " " + inventor.last);
+    console.log(fullNames);
 
     // Array.prototype.sort()
     // 3. Sort the inventors by birthdate, oldest to youngest
+    let ordered = inventors.sort((a, b) => a.year > b.year ? 1 : -1);
+    console.table(ordered);
 
     // Array.prototype.reduce()
     // 4. How many years did all the inventors live?
+    const yearsLived = inventors.reduce((total, inventor) => {
+      return total + (inventor.passed - inventor.year);
+    }, 0);
+    console.log(yearsLived);
 
     // 5. Sort the inventors by years lived
+    const orderLife = inventors.sort((a, b) => {
+      const aLife = a.passed - a.year;
+      const bLife = b.passed - b.year;
+      (aLife > bLife) ? -1 : 1;
+    });
+    console.table(orderLife);
 
     // 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 boulevards = [... document.querySelectorAll('.mw-category a')]
+    // let result = boulevards.map(boulevard => boulevard.textContent).filter(boulevard => boulevard.includes(`Boulevard de`))
 
     // 7. sort Exercise
     // Sort the people alphabetically by last name
+    let sorted = people.sort((lastOne, nextOne) => {
+      const [aLast, aFirst] = lastOne.split(`, `);
+      const [bLast, bFirst] = nextOne.split(`, `);
+      return aLast < bLast ? -1 : 1 ;
+    });
+    console.log(sorted);
 
     // 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 count = data.reduce((obj, item) => {
+      if (!obj[item]) {
+        obj[item] = 0;
+      }
+      obj[item]++;
+      return obj;
+    }, {});
+    console.log(count);
 
   </script>
 </body>
diff --git a/05 - Flex Panel Gallery/index-START.html b/05 - Flex Panel Gallery/index-START.html
index e1d643ad5c..dac9f1bcbb 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;
+      display: flex;
+      text-align: center;
+      justify-content: center;
+      flex-direction: column;
     }
 
 
@@ -54,6 +60,10 @@
       margin:0;
       width: 100%;
       transition:transform 0.5s;
+      flex: 1 0 auto;
+      display: flex;
+      justify-content: center;
+      align-items: center;
     }
 
     .panel p {
@@ -66,7 +76,23 @@
       font-size: 4em;
     }
 
+    .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.open {
+      flex: 5;
       font-size:40px;
     }
 
@@ -107,7 +133,17 @@
   </div>
 
   <script>
-
+    document.querySelectorAll('.panel').forEach(panel => {
+
+      panel.addEventListener('click', function(e){
+        this.classList.toggle('open');
+      });
+      panel.addEventListener('transitionend', function(e){
+        if (e.propertyName.includes('flex')){
+          this.classList.toggle('open-active');
+        }
+      });
+    });
   </script>
 
 
diff --git a/06 - Type Ahead/index-START.html b/06 - Type Ahead/index-START.html
index 1436886918..a454e9a3e9 100644
--- a/06 - Type Ahead/index-START.html	
+++ b/06 - Type Ahead/index-START.html	
@@ -15,7 +15,52 @@
     </ul>
   </form>
 <script>
-const endpoint = 'https://gist.githubusercontent.com/Miserlou/c5cd8364bf9b2420bb29/raw/2bf258763cdddd704f8ffd3ea9a3e81d25e2c6f6/cities.json';
+  const endpoint = 'https://gist.githubusercontent.com/Miserlou/c5cd8364bf9b2420bb29/raw/2bf258763cdddd704f8ffd3ea9a3e81d25e2c6f6/cities.json';
+
+  const cityArray = [];
+  fetch(endpoint).then(blob => blob.json()).then(item => cityArray.push(...item));
+
+  function matchCity(cityToMatch, cityArray){
+    return cityArray.filter(place => {
+      let regex = new RegExp(cityToMatch, 'gi');
+      return place.city.match(regex) || place.state.match(regex);
+    });
+  };
+
+function numberWithCommas(x) {
+  return x.toString().replace(/\B(?=(\d{3})+(?!\d))/g, ',');
+}
+
+  function displayCity(){
+    const queryResponse = matchCity(this.value, cityArray);
+    const html = queryResponse.map(place => {
+      let 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 search = document.querySelector('.search');
+  const suggestions = document.querySelector('.suggestions');
+
+  search.addEventListener('keyup', displayCity);
+  search.addEventListener('change', displayCity);
+
+// 5. Faire la vue Display Match
+  // a. poser un micro sur la box sur keyup et change
+  // b. faire une méthode de vue qui va renvoyer la donnée à la fonction de back
+  // c. itérer sur l'array de résultats et return un squelette de html dans lequel on interpolle cityname et statename
+  // d. faire une regexp pour highlight parce qu'on utilise match
+  // e. à la fin du return faire join ('') pour faire une seule string à ajouter
+  // f. copier coller la fonction du numéro en , depuis finish
+
 
 </script>
   </body>
diff --git a/06 - Type Ahead/style.css b/06 - Type Ahead/style.css
index 36dc55f30e..42badccd7a 100644
--- a/06 - Type Ahead/style.css	
+++ b/06 - Type Ahead/style.css	
@@ -38,8 +38,8 @@
       margin: 0;
       padding: 0;
       position: relative;
-      /*perspective:20px;*/
-    }
+/*      perspective:20px;
+*/    }
     .suggestions li {
       background:white;
       list-style: none;
diff --git a/07 - Array Cardio Day 2/index-START.html b/07 - Array Cardio Day 2/index-START.html
index 206ec31aa0..9956c61617 100644
--- a/07 - Array Cardio Day 2/index-START.html	
+++ b/07 - Array Cardio Day 2/index-START.html	
@@ -26,15 +26,36 @@
 
     // Some and Every Checks
     // Array.prototype.some() // is at least one person 19?
+    const isAdult = people.some(person => {
+      let date = (new Date()).getFullYear();
+      let age = date - person.year;
+      return age >= 19;
+    });
+    console.log(isAdult);
     // Array.prototype.every() // is everyone 19?
+    const allAdults = people.every(person => {
+      let date = (new Date()).getFullYear();
+      let age = date - person.year;
+      return age >= 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 idcheck = comments.find(comment => (comment.id === 823423));
+    console.log(idcheck);
 
     // Array.prototype.findIndex()
     // Find the comment with this ID
     // delete the comment with the ID of 823423
+    const findDelete = comments.findIndex(comment => (comment.id === 823423));
+    console.table(comments);
+    comments.splice(findDelete, 1);
+    console.table(comments);
+
+
 
   </script>
 </body>
diff --git a/10 - Hold Shift and Check Checkboxes/index-START.html b/10 - Hold Shift and Check Checkboxes/index-START.html
index eb7ed310bb..4c5fdcacea 100644
--- a/10 - Hold Shift and Check Checkboxes/index-START.html	
+++ b/10 - Hold Shift and Check Checkboxes/index-START.html	
@@ -104,6 +104,41 @@
   </div>
 
 <script>
+
+const checkBox = document.querySelectorAll(`.item input[type='checkBox']`);
+
+let lastChecked;
+
+function processCheck(e) {
+  let inBetween = false;
+  if (e.shiftKey && this.checked ){
+    checkBox.forEach(check => {
+      console.log(check)
+      if(check === this || check === lastChecked){
+        inBetween = !inBetween;
+        console.log(`checkpoint: ${inBetween}`);
+      }
+
+      if (inBetween === true) {
+        check.checked = true;
+      }
+    });
+    };
+    lastChecked = this;
+  }
+
+checkBox.forEach(check => check.addEventListener('click', processCheck));
+
+// 1. on va chercher toutes le checkbox
+// 2. on pose un micro sur la checkbox on clicks
+// 3. on fait la méthode pour que la chose comprenne quel est l'array de check est de ça à ça
+  // on a besoin d'une variable last checked pour savoir quelle est la derniere qui a été pressionnée
+  // On a besoin de vériiers que shiftkey is down and that checkbox has been checked
+  // On fait une variable in between fausse par défault qui nous permet de trouvber la fourchette de checkbox entre les deux
+  // on fait un boucle sur chaque checknox et on tester si l'événement = la checkbox qu'on check ou lastchecked puis on implémente l'action.
+  // Dans l'action on toggle le false de inbetween
+  // Maintenant qu'on sait que inbetween est vrai aux deux endroits on fait une deuxieme if et on dit inbetween true checkbox.checked = true
+  // on
 </script>
 </body>
 </html>