diff --git a/Lesson10/Activity15/activity-on-checkout-prop-start.html b/Lesson10/Activity15/activity-on-checkout-prop-start.html
index 41ed45c..aa48b20 100644
--- a/Lesson10/Activity15/activity-on-checkout-prop-start.html
+++ b/Lesson10/Activity15/activity-on-checkout-prop-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./activity-1-on-checkout-prop-start.js">
+<script src="./activity-on-checkout-prop-start.js">
diff --git a/Lesson10/Activity15/activity-on-checkout-prop.html b/Lesson10/Activity15/activity-on-checkout-prop.html
index 78f0a3d..46cc3ee 100644
--- a/Lesson10/Activity15/activity-on-checkout-prop.html
+++ b/Lesson10/Activity15/activity-on-checkout-prop.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./activity-1-on-checkout-prop.js">
+<script src="./activity-on-checkout-prop.js">
diff --git a/Lesson10/Activity15/package.json b/Lesson10/Activity15/package.json
index 24f67cf..a52ef50 100644
--- a/Lesson10/Activity15/package.json
+++ b/Lesson10/Activity15/package.json
@@ -4,13 +4,8 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Activity15": "parcel serve activity-on-checkout-prop-start.html",
+    "Activity15:solution": "parcel serve activity-on-checkout-prop.html"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
diff --git a/Lesson10/Activity16/package.json b/Lesson10/Activity16/package.json
index 24f67cf..17ef4e8 100644
--- a/Lesson10/Activity16/package.json
+++ b/Lesson10/Activity16/package.json
@@ -4,23 +4,10 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Activity16": "node activity-items-selector-test-start.js",
+    "Activity16:solution": "node activity-items-selector-test.js"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
-  "dependencies": {
-    "concurrently": "^4.1.2",
-    "parcel-bundler": "^1.12.3",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-redux": "^7.1.1",
-    "redux": "^4.0.4",
-    "redux-thunk": "^2.3.0"
-  }
+  "dependencies": {}
 }
diff --git a/Lesson10/Activity17/activity-app-start.html b/Lesson10/Activity17/activity-app-start.html
index a679316..e40d463 100644
--- a/Lesson10/Activity17/activity-app-start.html
+++ b/Lesson10/Activity17/activity-app-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./activity-3-app-start.js">
+<script src="./activity-app-start.js">
diff --git a/Lesson10/Activity17/activity-app.html b/Lesson10/Activity17/activity-app.html
index 03c1541..42c7266 100644
--- a/Lesson10/Activity17/activity-app.html
+++ b/Lesson10/Activity17/activity-app.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./activity-3-app.js">
+<script src="./activity-app.js">
diff --git a/Lesson10/Activity17/package.json b/Lesson10/Activity17/package.json
index 24f67cf..a46c6a3 100644
--- a/Lesson10/Activity17/package.json
+++ b/Lesson10/Activity17/package.json
@@ -4,18 +4,16 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Activity17": "concurrently --names GraphQL,React \"node activity-bff.js\" \"parcel serve activity-app-start.html\"",
+    "Activity17:solution": "concurrently --names GraphQL,React \"node activity-bff.js\" \"parcel serve activity-app.html\""
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
   "dependencies": {
     "concurrently": "^4.1.2",
+    "express-graphql": "^0.9.0",
+    "graphql": "^14.5.8",
+    "micro": "^9.3.4",
     "parcel-bundler": "^1.12.3",
     "react": "^16.9.0",
     "react-dom": "^16.9.0",
diff --git a/Lesson10/Exercise70/package.json b/Lesson10/Exercise70/package.json
index 24f67cf..fb4680c 100644
--- a/Lesson10/Exercise70/package.json
+++ b/Lesson10/Exercise70/package.json
@@ -4,23 +4,9 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise70": "node exercise-re-implement-array-methods-start.js",
+    "Exercise70:solution": "node exercise-re-implement-array-methods.js"
   },
   "author": "Hugo Di Francesco",
-  "license": "MIT",
-  "dependencies": {
-    "concurrently": "^4.1.2",
-    "parcel-bundler": "^1.12.3",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-redux": "^7.1.1",
-    "redux": "^4.0.4",
-    "redux-thunk": "^2.3.0"
-  }
+  "license": "MIT"
 }
diff --git a/Lesson10/Exercise71/package.json b/Lesson10/Exercise71/package.json
index 24f67cf..e960793 100644
--- a/Lesson10/Exercise71/package.json
+++ b/Lesson10/Exercise71/package.json
@@ -4,23 +4,9 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise71": "node exercise-price-of-basket-start.js",
+    "Exercise71:solution": "node exercise-price-of-basket.js"
   },
   "author": "Hugo Di Francesco",
-  "license": "MIT",
-  "dependencies": {
-    "concurrently": "^4.1.2",
-    "parcel-bundler": "^1.12.3",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-redux": "^7.1.1",
-    "redux": "^4.0.4",
-    "redux-thunk": "^2.3.0"
-  }
+  "license": "MIT"
 }
diff --git a/Lesson10/Exercise72/exercise-add-product-start.html b/Lesson10/Exercise72/exercise-add-product-start.html
index 1eaf980..dc04339 100644
--- a/Lesson10/Exercise72/exercise-add-product-start.html
+++ b/Lesson10/Exercise72/exercise-add-product-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-3-add-product-start.js">
+<script src="./exercise-add-product-start.js">
diff --git a/Lesson10/Exercise72/exercise-add-product.html b/Lesson10/Exercise72/exercise-add-product.html
index 7bd4c34..5d83958 100644
--- a/Lesson10/Exercise72/exercise-add-product.html
+++ b/Lesson10/Exercise72/exercise-add-product.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-3-add-product.js">
+<script src="./exercise-add-product.js">
diff --git a/Lesson10/Exercise72/package.json b/Lesson10/Exercise72/package.json
index 24f67cf..661f221 100644
--- a/Lesson10/Exercise72/package.json
+++ b/Lesson10/Exercise72/package.json
@@ -4,13 +4,8 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise72": "parcel serve exercise-add-product-start.html",
+    "Exercise72:solution": "parcel serve exercise-add-product.html"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
diff --git a/Lesson10/Exercise73/exercise-render-prop-start.html b/Lesson10/Exercise73/exercise-render-prop-start.html
index 051cd67..20d722e 100644
--- a/Lesson10/Exercise73/exercise-render-prop-start.html
+++ b/Lesson10/Exercise73/exercise-render-prop-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-4-render-prop-start.js">
+<script src="./exercise-render-prop-start.js">
diff --git a/Lesson10/Exercise73/exercise-render-prop.html b/Lesson10/Exercise73/exercise-render-prop.html
index d621141..fb44024 100644
--- a/Lesson10/Exercise73/exercise-render-prop.html
+++ b/Lesson10/Exercise73/exercise-render-prop.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-4-render-prop.js">
+<script src="./exercise-render-prop.js">
diff --git a/Lesson10/Exercise73/package.json b/Lesson10/Exercise73/package.json
index 24f67cf..8ee10dc 100644
--- a/Lesson10/Exercise73/package.json
+++ b/Lesson10/Exercise73/package.json
@@ -4,13 +4,8 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise73": "parcel serve exercise-render-prop-start.html",
+    "Exercise73:solution": "parcel serve exercise-render-prop.html"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
diff --git a/Lesson10/Exercise74/exercise-redux-dispatch-start.html b/Lesson10/Exercise74/exercise-redux-dispatch-start.html
index e9d439a..6606367 100644
--- a/Lesson10/Exercise74/exercise-redux-dispatch-start.html
+++ b/Lesson10/Exercise74/exercise-redux-dispatch-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-5-redux-dispatch-start.js">
+<script src="./exercise-redux-dispatch-start.js">
diff --git a/Lesson10/Exercise74/exercise-redux-dispatch.html b/Lesson10/Exercise74/exercise-redux-dispatch.html
index b7fd993..ed496e8 100644
--- a/Lesson10/Exercise74/exercise-redux-dispatch.html
+++ b/Lesson10/Exercise74/exercise-redux-dispatch.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-5-redux-dispatch.js">
+<script src="./exercise-redux-dispatch.js">
diff --git a/Lesson10/Exercise74/package.json b/Lesson10/Exercise74/package.json
index 24f67cf..3d22f3a 100644
--- a/Lesson10/Exercise74/package.json
+++ b/Lesson10/Exercise74/package.json
@@ -4,13 +4,8 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise74": "parcel serve exercise-redux-dispatch-start.html",
+    "Exercise74:solution": "parcel serve exercise-redux-dispatch.html"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
diff --git a/Lesson10/Exercise75/package.json b/Lesson10/Exercise75/package.json
index 24f67cf..33dea91 100644
--- a/Lesson10/Exercise75/package.json
+++ b/Lesson10/Exercise75/package.json
@@ -4,23 +4,9 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise75": "node exercise-reducer-test-start.js",
+    "Exercise75:solution": "node exercise-reducer-test.js"
   },
   "author": "Hugo Di Francesco",
-  "license": "MIT",
-  "dependencies": {
-    "concurrently": "^4.1.2",
-    "parcel-bundler": "^1.12.3",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-redux": "^7.1.1",
-    "redux": "^4.0.4",
-    "redux-thunk": "^2.3.0"
-  }
+  "license": "MIT"
 }
diff --git a/Lesson10/Exercise76/exercise-items-selector-start.html b/Lesson10/Exercise76/exercise-items-selector-start.html
index 9d40ff5..a1ecd84 100644
--- a/Lesson10/Exercise76/exercise-items-selector-start.html
+++ b/Lesson10/Exercise76/exercise-items-selector-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-7-items-selector-start.js">
+<script src="./exercise-items-selector-start.js">
diff --git a/Lesson10/Exercise76/exercise-items-selector.html b/Lesson10/Exercise76/exercise-items-selector.html
index eb51650..26acb90 100644
--- a/Lesson10/Exercise76/exercise-items-selector.html
+++ b/Lesson10/Exercise76/exercise-items-selector.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-7-items-selector.js">
+<script src="./exercise-items-selector.js">
diff --git a/Lesson10/Exercise76/package.json b/Lesson10/Exercise76/package.json
index 24f67cf..0317e59 100644
--- a/Lesson10/Exercise76/package.json
+++ b/Lesson10/Exercise76/package.json
@@ -4,13 +4,8 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise76": "parcel serve exercise-items-selector-start.html",
+    "Exercise76:solution": "parcel serve exercise-items-selector.html"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
diff --git a/Lesson10/Exercise77/package.json b/Lesson10/Exercise77/package.json
index 24f67cf..bfd2720 100644
--- a/Lesson10/Exercise77/package.json
+++ b/Lesson10/Exercise77/package.json
@@ -4,23 +4,9 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise77": "node exercise-2-to-n-compose-start.js",
+    "Exercise77:solution": "node exercise-2-to-n-compose.js"
   },
   "author": "Hugo Di Francesco",
-  "license": "MIT",
-  "dependencies": {
-    "concurrently": "^4.1.2",
-    "parcel-bundler": "^1.12.3",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-redux": "^7.1.1",
-    "redux": "^4.0.4",
-    "redux-thunk": "^2.3.0"
-  }
+  "license": "MIT"
 }
diff --git a/Lesson10/Exercise78/package.json b/Lesson10/Exercise78/package.json
index 24f67cf..7130e03 100644
--- a/Lesson10/Exercise78/package.json
+++ b/Lesson10/Exercise78/package.json
@@ -4,23 +4,12 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise78": "node exercise-micro-compose-start.js",
+    "Exercise78:solution": "node exercise-micro-compose.js"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
   "dependencies": {
-    "concurrently": "^4.1.2",
-    "parcel-bundler": "^1.12.3",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-redux": "^7.1.1",
-    "redux": "^4.0.4",
-    "redux-thunk": "^2.3.0"
+    "micro": "^9.3.4"
   }
 }
diff --git a/Lesson10/Exercise79/exercise-refactor-action-creators-start.html b/Lesson10/Exercise79/exercise-refactor-action-creators-start.html
index 11dce65..df381e8 100644
--- a/Lesson10/Exercise79/exercise-refactor-action-creators-start.html
+++ b/Lesson10/Exercise79/exercise-refactor-action-creators-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-10-refactor-action-creators-start.js">
+<script src="./exercise-refactor-action-creators-start.js">
diff --git a/Lesson10/Exercise79/exercise-refactor-action-creators.html b/Lesson10/Exercise79/exercise-refactor-action-creators.html
index d3fe0cc..771fd78 100644
--- a/Lesson10/Exercise79/exercise-refactor-action-creators.html
+++ b/Lesson10/Exercise79/exercise-refactor-action-creators.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-10-refactor-action-creators.js">
+<script src="./exercise-refactor-action-creators.js">
diff --git a/Lesson10/Exercise79/package.json b/Lesson10/Exercise79/package.json
index 24f67cf..c1ca7eb 100644
--- a/Lesson10/Exercise79/package.json
+++ b/Lesson10/Exercise79/package.json
@@ -4,13 +4,8 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Exercise79": "parcel serve exercise-refactor-action-creators-start.html",
+    "Exercise79:solution": "parcel serve exercise-refactor-action-creators.html"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
diff --git a/Lesson10/Exercise80/exercise-map-to-props-start.html b/Lesson10/Exercise80/exercise-map-to-props-start.html
index ad8fafe..fc9e465 100644
--- a/Lesson10/Exercise80/exercise-map-to-props-start.html
+++ b/Lesson10/Exercise80/exercise-map-to-props-start.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-11-map-to-props-start.js">
+<script src="./exercise-map-to-props-start.js">
diff --git a/Lesson10/Exercise80/exercise-map-to-props.html b/Lesson10/Exercise80/exercise-map-to-props.html
index a453f86..5e9df72 100644
--- a/Lesson10/Exercise80/exercise-map-to-props.html
+++ b/Lesson10/Exercise80/exercise-map-to-props.html
@@ -1,2 +1,2 @@
 <div id="app"></div>
-<script src="./exercise-11-map-to-props.js">
+<script src="./exercise-map-to-props.js">
diff --git a/Lesson10/Exercise80/package.json b/Lesson10/Exercise80/package.json
index 2d6a36f..d115e39 100644
--- a/Lesson10/Exercise80/package.json
+++ b/Lesson10/Exercise80/package.json
@@ -4,36 +4,12 @@
   "description": "Lesson 10 Exercises",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "exercise1": "node exercise-1-re-implement-array-methods-start.js",
-    "exercise1:solution": "node exercise-1-re-implement-array-methods.js",
-    "exercise2": "node exercise-2-price-of-basket-start.js",
-    "exercise2:solution": "node exercise-2-price-of-basket.js",
-    "exercise3": "parcel serve exercise-3-add-product-start.html",
-    "exercise3:solution": "parcel serve exercise-3-add-product.html",
-    "exercise4": "parcel serve exercise-4-render-prop-start.html",
-    "exercise4:solution": "parcel serve exercise-4-render-prop.html",
-    "exercise5": "parcel serve exercise-5-redux-dispatch-start.html",
-    "exercise5:solution": "parcel serve exercise-5-redux-dispatch.html",
-    "exercise6": "node exercise-6-reducer-test-start.js",
-    "exercise6:solution": "node exercise-6-reducer-test.js",
-    "exercise7": "parcel serve exercise-7-items-selector-start.html",
-    "exercise7:solution": "parcel serve exercise-7-items-selector.html",
-    "exercise8": "node exercise-8-2-to-n-compose-start.js",
-    "exercise8:solution": "node exercise-8-2-to-n-compose.js",
-    "exercise9": "node exercise-9-micro-compose-start.js",
-    "exercise9:solution": "node exercise-9-micro-compose.js",
-    "exercise10": "parcel serve exercise-10-refactor-action-creators-start.html",
-    "exercise10:solution": "parcel serve exercise-10-refactor-action-creators.html",
-    "exercise11": "parcel serve exercise-11-map-to-props-start.html",
-    "exercise11:solution": "parcel serve exercise-11-map-to-props.html",
-    "exercise12": "node exercise-12-graphql-micro-start.js",
-    "exercise12:solution": "node exercise-12-graphql-micro.js"
+    "Exercise80": "parcel serve exercise-map-to-props-start.html",
+    "Exercise80:solution": "parcel serve exercise-map-to-props.html"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
   "dependencies": {
-    "micro": "^9.3.4",
     "parcel-bundler": "^1.12.3",
     "react": "^16.9.0",
     "react-dom": "^16.9.0",
diff --git a/Lesson10/Exercise81/package.json b/Lesson10/Exercise81/package.json
index 2d6a36f..c37a77c 100644
--- a/Lesson10/Exercise81/package.json
+++ b/Lesson10/Exercise81/package.json
@@ -4,40 +4,14 @@
   "description": "Lesson 10 Exercises",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "exercise1": "node exercise-1-re-implement-array-methods-start.js",
-    "exercise1:solution": "node exercise-1-re-implement-array-methods.js",
-    "exercise2": "node exercise-2-price-of-basket-start.js",
-    "exercise2:solution": "node exercise-2-price-of-basket.js",
-    "exercise3": "parcel serve exercise-3-add-product-start.html",
-    "exercise3:solution": "parcel serve exercise-3-add-product.html",
-    "exercise4": "parcel serve exercise-4-render-prop-start.html",
-    "exercise4:solution": "parcel serve exercise-4-render-prop.html",
-    "exercise5": "parcel serve exercise-5-redux-dispatch-start.html",
-    "exercise5:solution": "parcel serve exercise-5-redux-dispatch.html",
-    "exercise6": "node exercise-6-reducer-test-start.js",
-    "exercise6:solution": "node exercise-6-reducer-test.js",
-    "exercise7": "parcel serve exercise-7-items-selector-start.html",
-    "exercise7:solution": "parcel serve exercise-7-items-selector.html",
-    "exercise8": "node exercise-8-2-to-n-compose-start.js",
-    "exercise8:solution": "node exercise-8-2-to-n-compose.js",
-    "exercise9": "node exercise-9-micro-compose-start.js",
-    "exercise9:solution": "node exercise-9-micro-compose.js",
-    "exercise10": "parcel serve exercise-10-refactor-action-creators-start.html",
-    "exercise10:solution": "parcel serve exercise-10-refactor-action-creators.html",
-    "exercise11": "parcel serve exercise-11-map-to-props-start.html",
-    "exercise11:solution": "parcel serve exercise-11-map-to-props.html",
-    "exercise12": "node exercise-12-graphql-micro-start.js",
-    "exercise12:solution": "node exercise-12-graphql-micro.js"
+    "Exercise81": "node exercise-graphql-micro-start.js",
+    "Exercise81:solution": "node exercise-graphql-micro.js"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
   "dependencies": {
-    "micro": "^9.3.4",
-    "parcel-bundler": "^1.12.3",
-    "react": "^16.9.0",
-    "react-dom": "^16.9.0",
-    "react-redux": "^7.1.1",
-    "redux": "^4.0.4"
+    "express-graphql": "^0.9.0",
+    "graphql": "^14.5.8",
+    "micro": "^9.3.4"
   }
 }
diff --git a/Lesson10/package.json b/Lesson10/package.json
index 24f67cf..516fd08 100644
--- a/Lesson10/package.json
+++ b/Lesson10/package.json
@@ -4,18 +4,44 @@
   "description": "Lesson 10 Activities",
   "main": "index.js",
   "scripts": {
-    "serve": "parcel serve",
-    "activity1": "parcel serve activity-1-on-checkout-prop-start.html",
-    "activity1:solution": "parcel serve activity-1-on-checkout-prop.html",
-    "activity2": "node activity-2-items-selector-test-start.js",
-    "activity2:solution": "node activity-2-items-selector-test.js",
-    "activity3": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app-start.html\"",
-    "activity3:solution": "concurrently --names GraphQL,React \"node activity-3-bff.js\" \"parcel serve activity-3-app.html\""
+    "Activity15": "parcel serve Activity15/activity-on-checkout-prop-start.html",
+    "Activity15:solution": "parcel serve Activity15/activity-on-checkout-prop.html",
+    "Activity16": "node Activity16/activity-items-selector-test-start.js",
+    "Activity16:solution": "node Activity16/activity-items-selector-test.js",
+    "Activity17": "concurrently --names GraphQL,React \"node Activity17/activity-bff.js\" \"parcel serve Activity17/activity-app-start.html\"",
+    "Activity17:solution": "concurrently --names GraphQL,React \"node Activity17/activity-bff.js\" \"parcel serve Activity17/activity-app.html\"",
+    "Exercise70": "node Exercise70/exercise-re-implement-array-methods-start.js",
+    "Exercise70:solution": "node Exercise70/exercise-re-implement-array-methods.js",
+    "Exercise71": "node Exercise71/exercise-price-of-basket-start.js",
+    "Exercise71:solution": "node Exercise71/exercise-price-of-basket.js",
+    "Exercise72": "parcel serve Exercise72/exercise-add-product-start.html",
+    "Exercise72:solution": "parcel serve Exercise72/exercise-add-product.html",
+    "Exercise74": "parcel serve Exercise74/exercise-redux-dispatch-start.html",
+    "Exercise74:solution": "parcel serve Exercise74/exercise-redux-dispatch.html",
+    "Exercise73": "parcel serve Exercise73/exercise-render-prop-start.html",
+    "Exercise73:solution": "parcel serve Exercise73/exercise-render-prop.html",
+    "Exercise75": "node Exercise75/exercise-reducer-test-start.js",
+    "Exercise75:solution": "node Exercise75/exercise-reducer-test.js",
+    "Exercise76": "parcel serve Exercise76/exercise-items-selector-start.html",
+    "Exercise76:solution": "parcel serve Exercise76/exercise-items-selector.html",
+    "Exercise77": "node Exercise77/exercise-2-to-n-compose-start.js",
+    "Exercise77:solution": "node Exercise77/exercise-2-to-n-compose.js",
+    "Exercise78": "node Exercise78/exercise-micro-compose-start.js",
+    "Exercise78:solution": "node Exercise78/exercise-micro-compose.js",
+    "Exercise79": "parcel serve Exercise79/exercise-refactor-action-creators-start.html",
+    "Exercise79:solution": "parcel serve Exercise79/exercise-refactor-action-creators.html",
+    "Exercise80": "parcel serve Exercise80/exercise-map-to-props-start.html",
+    "Exercise80:solution": "parcel serve Exercise80/exercise-map-to-props.html",
+    "Exercise81": "node Exercise81/exercise-graphql-micro-start.js",
+    "Exercise81:solution": "node Exercise81/exercise-graphql-micro.js"
   },
   "author": "Hugo Di Francesco",
   "license": "MIT",
   "dependencies": {
     "concurrently": "^4.1.2",
+    "express-graphql": "^0.9.0",
+    "graphql": "^14.5.8",
+    "micro": "^9.3.4",
     "parcel-bundler": "^1.12.3",
     "react": "^16.9.0",
     "react-dom": "^16.9.0",