diff --git a/07_Day_Class_Components/07_class_based_components_boilerplate/src/index.js b/07_Day_Class_Components/07_class_based_components_boilerplate/src/index.js
index 1ad353e..e33508b 100644
--- a/07_Day_Class_Components/07_class_based_components_boilerplate/src/index.js
+++ b/07_Day_Class_Components/07_class_based_components_boilerplate/src/index.js
@@ -2,6 +2,39 @@
 
 import React from 'react'
 import ReactDOM from 'react-dom'
+import asabenehImage from './images/asabeneh.jpg'
+
+// Fuction to show month date year
+
+// User Card Component
+const UserCard = ({ user: { firstName, lastName, image } }) => (
+  <div className='user-card'>
+    <img src={image} alt={firstName} />
+    <h2>
+      {firstName}
+      {lastName}
+    </h2>
+  </div>
+)
+
+// A button component
+const Button = ({ text, onClick, style }) => (
+  <button style={style} onClick={onClick}>
+    {text}
+  </button>
+)
+
+// CSS styles in JavaScript Object
+const buttonStyles = {
+  backgroundColor: '#61dbfb',
+  padding: 10,
+  border: 'none',
+  borderRadius: 5,
+  margin: 3,
+  cursor: 'pointer',
+  fontSize: 18,
+  color: 'white',
+}
 
 // class based component
 class Header extends React.Component {
@@ -62,6 +95,17 @@ class Main extends React.Component {
           <ul>
             <TechList techs={this.props.techs} />
           </ul>
+          <UserCard user={this.props.user} />
+          <Button
+            text='Greet People'
+            onClick={this.props.greetPeople}
+            style={buttonStyles}
+          />
+          <Button
+            text='Show Time'
+            onClick={this.props.handleTime}
+            style={buttonStyles}
+          />
         </div>
       </main>
     )
@@ -86,6 +130,33 @@ class Footer extends React.Component {
 }
 
 class App extends React.Component {
+  showDate = (time) => {
+    const months = [
+      'January',
+      'February',
+      'March',
+      'April',
+      'May',
+      'June',
+      'July',
+      'August',
+      'September',
+      'October',
+      'November',
+      'December',
+    ]
+
+    const month = months[time.getMonth()].slice(0, 3)
+    const year = time.getFullYear()
+    const date = time.getDate()
+    return ` ${month} ${date}, ${year}`
+  }
+  handleTime = () => {
+    alert(this.showDate(new Date()))
+  }
+  greetPeople = () => {
+    alert('Welcome to 30 Days Of React Challenge, 2020')
+  }
   render() {
     const data = {
       welcome: 'Welcome to 30 Days Of React',
@@ -99,10 +170,19 @@ class App extends React.Component {
     }
     const techs = ['HTML', 'CSS', 'JavaScript']
 
+    // copying the author from data object to user variable using spread operator
+    const user = { ...data.author, image: asabenehImage }
+
     return (
       <div className='app'>
         <Header data={data} />
-        <Main techs={techs} />
+        <Main
+          user={user}
+          techs={techs}
+          handleTime={this.handleTime}
+          greetPeople={this.greetPeople}
+        />
+
         <Footer date={new Date()} />
       </div>
     )
@@ -111,3 +191,4 @@ class App extends React.Component {
 
 const rootElement = document.getElementById('root')
 ReactDOM.render(<App />, rootElement)
+
diff --git a/07_Day_Class_Components/07_class_components.md b/07_Day_Class_Components/07_class_components.md
index 7a85b91..d6a7e1a 100644
--- a/07_Day_Class_Components/07_class_components.md
+++ b/07_Day_Class_Components/07_class_components.md
@@ -20,6 +20,7 @@
 
 - [Class Components](#class-components)
   - [Accessing props in Class components](#accessing-props-in-class-components)
+  - [Methods in Class based component](#methods-in-class-based-component)
 - [Exercises](#exercises)
   - [Exercises: Level 1](#exercises-level-1)
   - [Exercises: Level 2](#exercises-level-2)
@@ -576,6 +577,243 @@ const rootElement = document.getElementById('root')
 ReactDOM.render(<App />, rootElement)
 ```
 
+## Methods in Class based component
+
+We access methods in class based component. Most of the time, we write different methods on the parent component and we pass them to child components. Let's see the implementation.
+
+Let's add a method on this component.
+
+```js
+//index.js
+
+import React from 'react'
+import ReactDOM from 'react-dom'
+
+// class based component
+class Header extends React.Component {
+  greetPeople = () => {
+    alert('Welcome to 30 Days Of React Challenge, 2020')
+  }
+  render() {
+    return (
+      <header>
+        <div className='header-wrapper'>
+          <h1>Welcome to 30 Days Of React</h1>
+          <h2>Getting Started React</h2>
+          <h3>JavaScript Library</h3>
+          <p>Asabeneh Yetayeh</p>
+          <small>Oct 7, 2020</small>
+          <button onClick={this.greetPeople}> Greet </button>
+        </div>
+      </header>
+    )
+  }
+}
+
+const rootElement = document.getElementById('root')
+ReactDOM.render(<Header />, rootElement)
+```
+
+The invoking or calling of the method triggers when the event occurs. Therefore, whenever you pass a method to an event listener do not invoke the method.
+
+Now, let's the code we had add all the necessary methods.
+
+```js
+// index.js
+
+import React from 'react'
+import ReactDOM from 'react-dom'
+import asabenehImage from './images/asabeneh.jpg'
+
+// Fuction to show month date year
+
+// User Card Component
+const UserCard = ({ user: { firstName, lastName, image } }) => (
+  <div className='user-card'>
+    <img src={image} alt={firstName} />
+    <h2>
+      {firstName}
+      {lastName}
+    </h2>
+  </div>
+)
+
+// A button component
+const Button = ({ text, onClick, style }) => (
+  <button style={style} onClick={onClick}>
+    {text}
+  </button>
+)
+
+// CSS styles in JavaScript Object
+const buttonStyles = {
+  backgroundColor: '#61dbfb',
+  padding: 10,
+  border: 'none',
+  borderRadius: 5,
+  margin: 3,
+  cursor: 'pointer',
+  fontSize: 18,
+  color: 'white',
+}
+
+// class based component
+class Header extends React.Component {
+  constructor(props) {
+    super(props)
+    // the code inside the constructor run before any other code
+  }
+  render() {
+    console.log(this.props.data)
+    const {
+      welcome,
+      title,
+      subtitle,
+      author: { firstName, lastName },
+      date,
+    } = this.props.data
+
+    return (
+      <header>
+        <div className='header-wrapper'>
+          <h1>{welcome}</h1>
+          <h2>{title}</h2>
+          <h3>{subtitle}</h3>
+          <p>
+            {firstName} {lastName}
+          </p>
+          <small>{date}</small>
+        </div>
+      </header>
+    )
+  }
+}
+
+// TechList Component
+// class base component
+class TechList extends React.Component {
+  constructor(props) {
+    super(props)
+  }
+  render() {
+    const { techs } = this.props
+    const techsFormatted = techs.map((tech) => <li key={tech}>{tech}</li>)
+    return techsFormatted
+  }
+}
+
+// Main Component
+// Class Component
+class Main extends React.Component {
+  constructor(props) {
+    super(props)
+  }
+  render() {
+    return (
+      <main>
+        <div className='main-wrapper'>
+          <p>Prerequisite to get started react.js:</p>
+          <ul>
+            <TechList techs={this.props.techs} />
+          </ul>
+          <UserCard user={this.props.user} />
+          <Button
+            text='Greet People'
+            onClick={this.props.greetPeople}
+            style={buttonStyles}
+          />
+          <Button
+            text='Show Time'
+            onClick={this.props.handleTime}
+            style={buttonStyles}
+          />
+        </div>
+      </main>
+    )
+  }
+}
+
+// Footer Component
+// Class component
+class Footer extends React.Component {
+  constructor(props) {
+    super(props)
+  }
+  render() {
+    return (
+      <footer>
+        <div className='footer-wrapper'>
+          <p>Copyright {this.props.date.getFullYear()}</p>
+        </div>
+      </footer>
+    )
+  }
+}
+
+class App extends React.Component {
+  showDate = (time) => {
+    const months = [
+      'January',
+      'February',
+      'March',
+      'April',
+      'May',
+      'June',
+      'July',
+      'August',
+      'September',
+      'October',
+      'November',
+      'December',
+    ]
+
+    const month = months[time.getMonth()].slice(0, 3)
+    const year = time.getFullYear()
+    const date = time.getDate()
+    return ` ${month} ${date}, ${year}`
+  }
+  handleTime = () => {
+    alert(this.showDate(new Date()))
+  }
+  greetPeople = () => {
+    alert('Welcome to 30 Days Of React Challenge, 2020')
+  }
+  render() {
+    const data = {
+      welcome: 'Welcome to 30 Days Of React',
+      title: 'Getting Started React',
+      subtitle: 'JavaScript Library',
+      author: {
+        firstName: 'Asabeneh',
+        lastName: 'Yetayeh',
+      },
+      date: 'Oct 7, 2020',
+    }
+    const techs = ['HTML', 'CSS', 'JavaScript']
+
+    // copying the author from data object to user variable using spread operator
+    const user = { ...data.author, image: asabenehImage }
+
+    return (
+      <div className='app'>
+        <Header data={data} />
+        <Main
+          user={user}
+          techs={techs}
+          handleTime={this.handleTime}
+          greetPeople={this.greetPeople}
+        />
+
+        <Footer date={new Date()} />
+      </div>
+    )
+  }
+}
+
+const rootElement = document.getElementById('root')
+ReactDOM.render(<App />, rootElement)
+```
+
 Most of the time the container or the parent component can be written as class component and others as functional or presentational components. Data usually flows from parent components to child component and it is unidirectional. However, the latest version of react can allow us to write every component in our application only with functional components. This was impossible in previous versions.
 In next section, we will cover state which is the heart of React. State allows React component to rerender when whenever there is a change in state.