diff --git a/my-app/src/chapter_08/ConfirmButton.jsx b/my-app/src/chapter_08/ConfirmButton.jsx
new file mode 100644
index 000000000..b192bd658
--- /dev/null
+++ b/my-app/src/chapter_08/ConfirmButton.jsx
@@ -0,0 +1,20 @@
+import React from "react";
+
+function ConfirmButton(props) {
+    const [isConfirmed, setIsConfirmed] = React.useState(false);
+
+    const handleConfirm = () => {
+        setIsConfirmed(prevIsConfirmed => !prevIsConfirmed);
+    };
+
+    return (
+        <button
+            onClick={handleConfirm}
+            disabled={isConfirmed}
+        >
+            {isConfirmed ? "확인됨" : "확인하기"}
+        </button>
+    );
+}
+
+export default ConfirmButton;
\ No newline at end of file
diff --git a/my-app/src/chapter_09/LandingPage.jsx b/my-app/src/chapter_09/LandingPage.jsx
new file mode 100644
index 000000000..0bfb1cbfd
--- /dev/null
+++ b/my-app/src/chapter_09/LandingPage.jsx
@@ -0,0 +1,27 @@
+import React, { useState } from "react";
+import Toolbar from "./Toolbar";
+
+function LandingPage(props) {
+    const [isLoggedIn, setIsLoggedIn] = useState(false);
+
+    const onClickLogin = () => {
+        setIsLoggedIn(true);
+    };
+
+    const onClickLogout = () => {
+        setIsLoggedIn(false);
+    };
+
+    return (
+        <div>
+            <Toolbar
+                isLoggedIn={isLoggedIn}
+                onClickLogin={onClickLogin}
+                onClickLogout={onClickLogout}
+            />
+            <div style={{ padding: 16 }}>리액트 공부!</div>
+        </div>
+    );
+}
+
+export default LandingPage;
\ No newline at end of file
diff --git a/my-app/src/chapter_09/Toolbar.jsx b/my-app/src/chapter_09/Toolbar.jsx
new file mode 100644
index 000000000..01035b676
--- /dev/null
+++ b/my-app/src/chapter_09/Toolbar.jsx
@@ -0,0 +1,30 @@
+import React from "react";
+
+const styles = {
+    wrapper: {
+        display: "flex",
+        padding: 16,
+        flexDirection: "row",
+        borderBottom: "1px solid grey",
+    },
+    greeting: {
+        marginRight: 8,
+    },
+};
+
+function Toolbar(props) {
+    const { isLoggedIn, onClickLogin, onClickLogout } = props;
+
+    return (
+        <div style={styles.wrapper}>
+            {isLoggedIn && <span style={styles.greeting}>환영합니다!</span>}
+            {isLoggedIn ? (
+                <button onClick={onClickLogout}>로그아웃</button>
+            ) : (
+                <button onClick={onClickLogin}>로그인</button>
+            )}
+        </div>
+    );
+}
+
+export default Toolbar;
\ No newline at end of file
diff --git a/my-app/src/chapter_10/AttendanceBook.jsx b/my-app/src/chapter_10/AttendanceBook.jsx
new file mode 100644
index 000000000..ba3b17d7f
--- /dev/null
+++ b/my-app/src/chapter_10/AttendanceBook.jsx
@@ -0,0 +1,34 @@
+import React from "react";
+
+const students = [
+    {
+        id: 1,
+        name: "Inje",
+    },
+    {
+        id: 2,
+        name: "Jisoo",
+    },
+    {
+        id: 3,
+        name: "Jiwon",
+    },
+    {  
+        id: 4,
+        name: "Soojin",
+    },
+];
+
+function AttendanceBook(props) {
+    return (
+        <ul>
+            {students.map((student, index) => {
+                return <li key={index}> {student.name}
+                </li>;
+            })}
+        </ul>
+
+    )
+}
+
+export default AttendanceBook;
\ No newline at end of file
diff --git a/my-app/src/chapter_11/SignUp.jsx b/my-app/src/chapter_11/SignUp.jsx
new file mode 100644
index 000000000..8d4201b68
--- /dev/null
+++ b/my-app/src/chapter_11/SignUp.jsx
@@ -0,0 +1,37 @@
+import React, {useState} from "react";
+
+function SignUp(props) {
+    const [name, setName] = useState("");
+    const [gender, setGender] = useState("남자");
+
+    const handleChangeName = (e) => {
+        setName(e.target.value);
+    };
+    const handleChangeGender = (e) => {
+        setGender(e.target.value);
+    };
+
+    const handleSubmit = (e) => {
+        alert(`이름: ${name}, 성별: ${gender}`);
+        e.preventDefault();
+    };
+
+    return (
+        <form onSubmit={handleSubmit}>
+            <label>
+                이름:
+                <input type="text" value={name} onChange={handleChangeName} />
+            </label>
+            <br />
+            <label>
+                성별:
+                <select value={gender} onChange={handleChangeGender}>
+                    <option value="남자">남자</option>
+                    <option value="여자">여자</option>
+                </select>
+            </label>
+            <button type="submit">제출</button>
+        </form>
+    );
+}
+export default SignUp;
diff --git a/my-app/src/chapter_12/Calculator.jsx b/my-app/src/chapter_12/Calculator.jsx
new file mode 100644
index 000000000..a0862b9c4
--- /dev/null
+++ b/my-app/src/chapter_12/Calculator.jsx
@@ -0,0 +1,65 @@
+import React, { useState } from "react";
+import TemperatureInput from "./TemperatureInput";
+
+function BoilingVerdict(props) {
+    if (props.celsius >= 100) {
+        return <p>물이 끓습니다.</p>;
+    }
+    return <p>물이 끓지 않습니다.</p>;
+}
+
+function toCelsius(fahrenheit) {
+    return ((fahrenheit - 32) * 5) / 9;
+}
+
+function toFahrenheit(celsius) {
+    return (celsius * 9) / 5 + 32;
+}
+
+function tryConvert(temperature, convert) {
+    const input = parseFloat(temperature);
+    if (Number.isNaN(input)) {
+        return "";
+    }
+    const output = convert(input);
+    const rounded = Math.round(output * 1000) / 1000;
+    return rounded.toString();
+}
+
+function Calculator(props) {
+    const [temperature, setTemperature] = useState("");
+    const [scale, setScale] = useState("c");
+
+    const handleCelsiusChange = (temperature) => {
+        setTemperature(temperature);
+        setScale("c");
+    };
+
+    const handleFahrenheitChange = (temperature) => {
+        setTemperature(temperature);
+        setScale("f");
+    };
+
+    const celsius =
+        scale === "f" ? tryConvert(temperature, toCelsius) : temperature;
+    const fahrenheit =
+        scale === "c" ? tryConvert(temperature, toFahrenheit) : temperature;
+
+    return (
+        <div>
+            <TemperatureInput
+                scale="c"
+                temperature={celsius}
+                onTemperatureChange={handleCelsiusChange}
+            />
+            <TemperatureInput
+                scale="f"
+                temperature={fahrenheit}
+                onTemperatureChange={handleFahrenheitChange}
+            />
+            <BoilingVerdict celsius={parseFloat(celsius)} />
+        </div>
+    );
+}
+
+export default Calculator;
\ No newline at end of file
diff --git a/my-app/src/chapter_12/TemperatureInput.jsx b/my-app/src/chapter_12/TemperatureInput.jsx
new file mode 100644
index 000000000..6c606592f
--- /dev/null
+++ b/my-app/src/chapter_12/TemperatureInput.jsx
@@ -0,0 +1,21 @@
+const scaleNames = {
+    c: "섭씨",
+    f: "화씨",
+};
+
+function TemperatureInput(props) {
+    const handleChange = (event) => {
+        props.onTemperatureChange(event.target.value);
+    };
+
+    return (
+        <fieldset>
+            <legend>
+                온도를 입력해주세요(단위:{scaleNames[props.scale]}):
+            </legend>
+            <input value={props.temperature} onChange={handleChange} />
+        </fieldset>
+    );
+}
+
+export default TemperatureInput;
\ No newline at end of file
diff --git a/my-app/src/chapter_13/Card.jsx b/my-app/src/chapter_13/Card.jsx
new file mode 100644
index 000000000..d8d1d83d3
--- /dev/null
+++ b/my-app/src/chapter_13/Card.jsx
@@ -0,0 +1,20 @@
+function Card(props) {
+    const { title, backgroundColor, children } = props;
+
+    return (
+        <div
+            style={{
+                margin: 8,
+                padding: 8,
+                borderRadius: 8,
+                boxShadow: "0px 0px 4px grey",
+                backgroundColor: backgroundColor || "white",
+            }}
+        >
+            {title && <h1>{title}</h1>}
+            {children}
+        </div>
+    );
+}
+
+export default Card;
\ No newline at end of file
diff --git a/my-app/src/chapter_13/ProfileCard.jsx b/my-app/src/chapter_13/ProfileCard.jsx
new file mode 100644
index 000000000..5051c3cd9
--- /dev/null
+++ b/my-app/src/chapter_13/ProfileCard.jsx
@@ -0,0 +1,12 @@
+import Card from "./Card";
+
+function ProfileCard(props) {
+    return (
+        <Card title="Kim Yunji" backgroundColor="#4ea04e">
+            <p>안녕하세요, 김윤지입니다.</p>
+            <p>저는 리액트를 사용해서 개발하고 있습니다.</p>
+        </Card>
+    );
+}
+
+export default ProfileCard;
\ No newline at end of file
diff --git a/my-app/src/index.js b/my-app/src/index.js
index 6ca54edd6..d5ebbed43 100644
--- a/my-app/src/index.js
+++ b/my-app/src/index.js
@@ -9,12 +9,18 @@ import Clock from './chapter_04/Clock';
 import CommentList from './chapter_05/CommentList';
 import NotificationList from './chapter_06/NotificationList';
 import Accommodate from './chapter_07/Accommodate';
+import ConfirmButton from './chapter_08/ConfirmButton';
+import LandingPage from './chapter_09/LandingPage';
+import AttendanceBook from './chapter_10/AttendanceBook';
+import SignUp from './chapter_11/SignUp';
+import Calculator from './chapter_12/Calculator';
+import ProfileCard from './chapter_13/ProfileCard';
 
 const root = ReactDOM.createRoot(document.getElementById('root')); // React 18 방식
 
 root.render(
   <React.StrictMode>
-    <Accommodate />
+    <ProfileCard />
   </React.StrictMode>
 );