diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/AddNewStudent.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/AddNewStudent.kt
new file mode 100644
index 0000000..b7eb1f2
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/AddNewStudent.kt
@@ -0,0 +1,57 @@
+package com.trainingdeveloperpro.giang
+
+import android.app.Activity
+import android.content.Intent
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+import android.text.TextUtils
+import android.widget.Button
+import android.widget.EditText
+import kotlinx.android.synthetic.main.activity_add_new_student.*
+
+class AddNewStudent : AppCompatActivity() {
+    private lateinit var name: EditText
+    private lateinit var age: EditText
+    private lateinit var phone: EditText
+
+    public override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_add_new_student)
+        supportActionBar!!.hide()
+
+        name = findViewById(R.id.edtName)
+        age = findViewById(R.id.edtAge)
+        phone = findViewById(R.id.edtPhone)
+
+        val button = findViewById<Button>(R.id.btnAddAStudent)
+        button.setOnClickListener {
+            val replyIntent = Intent()
+
+            if (TextUtils.isEmpty(name.text) ||
+                TextUtils.isEmpty(age.text) ||
+                TextUtils.isEmpty(phone.text)
+            ) {
+                setResult(Activity.RESULT_CANCELED, replyIntent)
+            }
+            else {
+                val name = edtName.text.toString()
+                val age = edtAge.text.toString()
+                val phone = edtPhone.text.toString()
+
+                replyIntent.putExtra(EXTRA_AGE, age)
+                replyIntent.putExtra(EXTRA_PHONE, phone)
+                replyIntent.putExtra(EXTRA_NAME, name)
+
+                setResult(Activity.RESULT_OK, replyIntent)
+            }
+            finish()
+        }
+    }
+
+    companion object {
+        const val EXTRA_NAME = "com.example.android.studentlistsql.EXTRA_NAME"
+        const val EXTRA_AGE = "com.example.android.studentlistsql.EXTRA_AGE"
+        const val EXTRA_PHONE = "com.example.android.studentlistsql.EXTRA_PHONE"
+
+    }
+}
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/LogTool.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/LogTool.kt
new file mode 100644
index 0000000..554191a
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/LogTool.kt
@@ -0,0 +1,12 @@
+package com.trainingdeveloperpro.giang
+
+import android.util.Log
+
+class LogTool {
+    companion object {
+        fun logD(tag: String, message: String) {
+            if (BuildConfig.DEBUG)
+                Log.d(tag, message)
+        }
+    }
+}
\ No newline at end of file
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/MainActivity.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/MainActivity.kt
new file mode 100644
index 0000000..8438568
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/MainActivity.kt
@@ -0,0 +1,13 @@
+package com.trainingdeveloperpro.giang
+
+import androidx.appcompat.app.AppCompatActivity
+import android.os.Bundle
+
+class MainActivity : AppCompatActivity() {
+
+    override fun onCreate(savedInstanceState: Bundle?) {
+        super.onCreate(savedInstanceState)
+        setContentView(R.layout.activity_main)
+        supportActionBar!!.hide()
+    }
+}
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/MyDiffUtil.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/MyDiffUtil.kt
new file mode 100644
index 0000000..7c5dc13
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/MyDiffUtil.kt
@@ -0,0 +1,24 @@
+package com.trainingdeveloperpro.giang
+
+import androidx.recyclerview.widget.DiffUtil
+
+
+class MyDiffUtil(internal var newList: StudentViewModel?, internal var oldList: StudentViewModel?) :
+    DiffUtil.Callback() {
+
+    override fun getOldListSize(): Int {
+        return if (oldList != null) oldList!!.size() else 0
+    }
+
+    override fun getNewListSize(): Int {
+        return if (newList != null) newList!!.size() else 0
+    }
+
+    override fun areItemsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+        return newList!!.getName(newItemPosition) === oldList!!.getName(newItemPosition)
+    }
+
+    override fun areContentsTheSame(oldItemPosition: Int, newItemPosition: Int): Boolean {
+        return false
+    }
+}
\ No newline at end of file
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/Student.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/Student.kt
new file mode 100755
index 0000000..5621adb
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/Student.kt
@@ -0,0 +1,10 @@
+package com.trainingdeveloperpro.giang
+
+import androidx.room.ColumnInfo
+import androidx.room.Entity
+import androidx.room.PrimaryKey
+
+@Entity(tableName = "student_table")
+data class Student(@PrimaryKey @ColumnInfo(name = "name") val name: String                   ,
+                   @ColumnInfo(name = "phone") val phone: String,
+                   @ColumnInfo(name = "age") val age: Int)
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/StudentAdapter.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentAdapter.kt
new file mode 100755
index 0000000..b2844c3
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentAdapter.kt
@@ -0,0 +1,59 @@
+package com.trainingdeveloperpro.giang
+
+import android.content.Context
+import androidx.recyclerview.widget.RecyclerView
+import android.view.LayoutInflater
+import android.view.View
+import android.view.ViewGroup
+import android.widget.TextView
+import java.util.*
+
+
+class StudentAdapter internal constructor(
+        context: Context
+) : RecyclerView.Adapter<StudentAdapter.StudentViewHolder>() {
+
+    private val inflater: LayoutInflater = LayoutInflater.from(context)
+    private var students = Collections.emptyList<Student>() // Cached copy of words
+
+    inner class StudentViewHolder(private val itemview: View) : RecyclerView.ViewHolder(itemview) {
+        var name: TextView
+        var phone: TextView
+        var age: TextView
+
+
+        init {
+            name = itemview.findViewById(R.id.txtName)
+            age = itemview.findViewById(R.id.txtAge)
+            phone = itemview.findViewById(R.id.txtPhone)
+            itemview.setOnClickListener { deleteStudent(adapterPosition) }
+        }
+
+        fun deleteStudent(position: Int) {
+            students.removeAt(position)
+            notifyItemRemoved(position)
+        }
+    }
+
+
+    override fun onCreateViewHolder(parent: ViewGroup, viewType: Int): StudentViewHolder {
+        val itemView = inflater.inflate(R.layout.item_student, parent, false)
+        return StudentViewHolder(itemView)
+    }
+
+    override fun onBindViewHolder(holder: StudentViewHolder, position: Int) {
+        val current = students[position]
+        holder.name.text = current.name
+        holder.age.text = current.age.toString()
+        holder.phone.text = current.phone
+    }
+
+    internal fun setStudent(students: List<Student>) {
+        this.students = students
+        notifyDataSetChanged()
+    }
+
+    override fun getItemCount() = students.size
+}
+
+
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/StudentDao.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentDao.kt
new file mode 100755
index 0000000..5d460fb
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentDao.kt
@@ -0,0 +1,21 @@
+package com.trainingdeveloperpro.giang
+
+import androidx.lifecycle.LiveData
+import androidx.room.Dao
+import androidx.room.Insert
+import androidx.room.OnConflictStrategy
+import androidx.room.Query
+
+
+@Dao
+interface StudentDao {
+
+    @Query("SELECT * from student_table ORDER BY name ASC")
+    fun getAlphabetizedWords(): LiveData<List<Student>>
+
+    @Insert(onConflict = OnConflictStrategy.IGNORE)
+    suspend fun insert(student: Student)
+
+    @Query("DELETE FROM student_table")
+    suspend fun deleteAll()
+}
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/StudentFragment.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentFragment.kt
new file mode 100644
index 0000000..c2271a3
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentFragment.kt
@@ -0,0 +1,95 @@
+package com.trainingdeveloperpro.giang
+
+import android.app.Activity
+import android.app.Activity.RESULT_OK
+import android.content.Intent
+import android.os.Bundle
+import android.util.Log
+import android.view.LayoutInflater
+import androidx.fragment.app.Fragment
+import android.view.View
+import android.view.ViewGroup
+import android.widget.Toast
+import androidx.lifecycle.Observer
+import androidx.lifecycle.ViewModelProviders
+import androidx.recyclerview.widget.*
+import com.trainingdeveloperpro.giang.AddNewStudent.Companion.EXTRA_AGE
+import com.trainingdeveloperpro.giang.AddNewStudent.Companion.EXTRA_NAME
+import com.trainingdeveloperpro.giang.AddNewStudent.Companion.EXTRA_PHONE
+import com.google.android.material.floatingactionbutton.FloatingActionButton
+import com.trainingdeveloperpro.giang.StudentViewModel as studentViewModel
+
+val newStudentctivityRequestCode = 1
+
+class StudentFragment : Fragment() {
+    private lateinit var studentViewModel: studentViewModel
+    private lateinit var recyclerView : RecyclerView
+    lateinit var adapter: StudentAdapter
+
+    override fun onCreateView(inflater: LayoutInflater, container: ViewGroup?, savedInstanceState: Bundle?): View? {
+
+        val rootView = inflater.inflate(R.layout.fragment_student, container, false)
+
+        recyclerView = rootView.findViewById<RecyclerView>(R.id.listStdudent)
+        adapter = StudentAdapter(activity!!.applicationContext)
+        recyclerView.adapter = adapter
+        recyclerView.layoutManager = LinearLayoutManager(activity)
+
+        studentViewModel = ViewModelProviders.of(this).get(com.trainingdeveloperpro.giang.StudentViewModel::class.java)
+
+        studentViewModel.allStudents.observe(this, Observer { words ->
+            words?.let { adapter.setStudent(it) }
+        })
+
+        val btnAdd = rootView.findViewById<FloatingActionButton>(R.id.btnAdd)
+        btnAdd.setOnClickListener {
+            val intent = Intent(activity, AddNewStudent::class.java)
+            startActivityForResult(intent, newStudentctivityRequestCode)
+        }
+
+        setGridLayout()
+
+        setLines()
+
+        return rootView
+    }
+
+    private fun setLines() {
+        val vertical = DividerItemDecoration(activity!!, DividerItemDecoration.VERTICAL)
+        recyclerView.addItemDecoration(vertical)
+    }
+
+    private fun setGridLayout() {
+        val gridLayoutManager = GridLayoutManager(activity, 2)
+        gridLayoutManager.orientation = GridLayoutManager.VERTICAL
+        recyclerView.setLayoutManager(gridLayoutManager)
+    }
+
+    override fun onActivityResult(requestCode: Int, resultCode: Int, intentData: Intent?) {
+
+        if (requestCode == newStudentctivityRequestCode && resultCode == RESULT_OK) {
+            intentData?.let { data ->
+                val student = Student(
+                    data.getStringExtra(EXTRA_NAME),
+                    data.getStringExtra(EXTRA_PHONE),
+                    data.getStringExtra(EXTRA_AGE).toInt()
+                )
+
+                var newListStudent: com.trainingdeveloperpro.giang.StudentViewModel = studentViewModel
+                newListStudent.insert(student)
+                var diffUtil: MyDiffUtil = MyDiffUtil(newListStudent,studentViewModel)
+                val diffResult = DiffUtil.calculateDiff(diffUtil)
+
+                studentViewModel = newListStudent
+                diffResult.dispatchUpdatesTo(adapter)
+            }
+        } else {
+            Toast.makeText(
+                activity,
+                R.string.toastAddNoone,
+                Toast.LENGTH_LONG
+            ).show()
+        }
+    }
+
+}
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/StudentRepository.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentRepository.kt
new file mode 100755
index 0000000..e8c1141
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentRepository.kt
@@ -0,0 +1,12 @@
+package com.trainingdeveloperpro.giang
+
+import androidx.lifecycle.LiveData
+
+
+class StudentRepository(private val studentDao: StudentDao) {
+    val allStudents: LiveData<List<Student>> = studentDao.getAlphabetizedWords()
+
+    suspend fun insert(student: Student) {
+        studentDao.insert(student)
+    }
+}
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/StudentRoomDatabase.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentRoomDatabase.kt
new file mode 100755
index 0000000..95c918b
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentRoomDatabase.kt
@@ -0,0 +1,72 @@
+package com.trainingdeveloperpro.giang
+
+import androidx.sqlite.db.SupportSQLiteDatabase
+import androidx.room.Database
+import androidx.room.Room
+import androidx.room.RoomDatabase
+import android.content.Context
+import kotlinx.coroutines.CoroutineScope
+import kotlinx.coroutines.launch
+
+@Database(entities = [Student::class], version = 1)
+abstract class StudentRoomDatabase : RoomDatabase() {
+
+    abstract fun studentDao(): StudentDao
+
+    companion object {
+        @Volatile
+        private var INSTANCE: StudentRoomDatabase? = null
+
+        fun getDatabase(
+                context: Context,
+                scope: CoroutineScope
+        ): StudentRoomDatabase {
+            // if the INSTANCE is not null, then return it,
+            // if it is, then create the database
+            return INSTANCE ?: synchronized(this) {
+                val instance = Room.databaseBuilder(
+                        context.applicationContext,
+                        StudentRoomDatabase::class.java,
+                        "student_database"
+                )
+                        // Wipes and rebuilds instead of migrating if no Migration object.
+                        // Migration is not part of this codelab.
+                        .fallbackToDestructiveMigration()
+                        .addCallback(StudentDatabaseCallback(scope))
+                        .build()
+                INSTANCE = instance
+                // return instance
+                instance
+            }
+        }
+
+        private class StudentDatabaseCallback(
+                private val scope: CoroutineScope
+        ) : RoomDatabase.Callback() {
+            override fun onOpen(db: SupportSQLiteDatabase) {
+                super.onOpen(db)
+                // If you want to keep the data through app restarts,
+                // comment out the following line.
+                INSTANCE?.let { database ->
+                    scope.launch {
+                        populateDatabase(database.studentDao())
+                    }
+                }
+            }
+        }
+
+        suspend fun populateDatabase(studentDao: StudentDao) {
+            studentDao.deleteAll()
+            studentDao.insert(Student("Giang", "03214212381", 20))
+            studentDao.insert(Student("Nam", "03214212322", 21))
+            studentDao.insert(Student("Ha", "0321421322", 11))
+            studentDao.insert(Student("Kha", "03214212332", 32))
+            studentDao.insert(Student("Hao", "03214212441", 12))
+            studentDao.insert(Student("Hoc", "03214212332", 21))
+            for (i in 1..20) {
+                studentDao.insert(Student("Name $i", "0321421233$i", 13 + i))
+            }
+        }
+    }
+
+}
diff --git a/giang/src/main/java/com.trainingdeveloperpro.giang/StudentViewModel.kt b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentViewModel.kt
new file mode 100755
index 0000000..478ebb0
--- /dev/null
+++ b/giang/src/main/java/com.trainingdeveloperpro.giang/StudentViewModel.kt
@@ -0,0 +1,34 @@
+package com.trainingdeveloperpro.giang
+
+import android.app.Application
+import androidx.lifecycle.AndroidViewModel
+import androidx.lifecycle.LiveData
+import androidx.lifecycle.viewModelScope
+import kotlinx.coroutines.launch
+
+
+
+class StudentViewModel(application: Application) : AndroidViewModel(application) {
+
+    private val repository: StudentRepository
+    val allStudents: LiveData<List<Student>>
+
+    init {
+        val studentsDao = StudentRoomDatabase.getDatabase(application, viewModelScope).studentDao()
+        repository = StudentRepository(studentsDao)
+        allStudents = repository.allStudents
+    }
+
+
+    fun insert(student: Student) = viewModelScope.launch {
+        repository.insert(student)
+    }
+
+    fun size():Int{
+        return allStudents.value!!.size
+    }
+
+    fun getName(position : Int):String{
+        return allStudents.value!!.get(position).name
+    }
+}
diff --git a/giang/src/main/res/drawable-v24/ic_launcher_foreground.xml b/giang/src/main/res/drawable-v24/ic_launcher_foreground.xml
new file mode 100644
index 0000000..6348baa
--- /dev/null
+++ b/giang/src/main/res/drawable-v24/ic_launcher_foreground.xml
@@ -0,0 +1,34 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        xmlns:aapt="http://schemas.android.com/aapt"
+        android:width="108dp"
+        android:height="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path
+            android:fillType="evenOdd"
+            android:pathData="M32,64C32,64 38.39,52.99 44.13,50.95C51.37,48.37 70.14,49.57 70.14,49.57L108.26,87.69L108,109.01L75.97,107.97L32,64Z"
+            android:strokeColor="#00000000"
+            android:strokeWidth="1">
+        <aapt:attr name="android:fillColor">
+            <gradient
+                    android:endX="78.5885"
+                    android:endY="90.9159"
+                    android:startX="48.7653"
+                    android:startY="61.0927"
+                    android:type="linear">
+                <item
+                        android:color="#44000000"
+                        android:offset="0.0"/>
+                <item
+                        android:color="#00000000"
+                        android:offset="1.0"/>
+            </gradient>
+        </aapt:attr>
+    </path>
+    <path
+            android:fillColor="#FFFFFF"
+            android:fillType="nonZero"
+            android:pathData="M66.94,46.02L66.94,46.02C72.44,50.07 76,56.61 76,64L32,64C32,56.61 35.56,50.11 40.98,46.06L36.18,41.19C35.45,40.45 35.45,39.3 36.18,38.56C36.91,37.81 38.05,37.81 38.78,38.56L44.25,44.05C47.18,42.57 50.48,41.71 54,41.71C57.48,41.71 60.78,42.57 63.68,44.05L69.11,38.56C69.84,37.81 70.98,37.81 71.71,38.56C72.44,39.3 72.44,40.45 71.71,41.19L66.94,46.02ZM62.94,56.92C64.08,56.92 65,56.01 65,54.88C65,53.76 64.08,52.85 62.94,52.85C61.8,52.85 60.88,53.76 60.88,54.88C60.88,56.01 61.8,56.92 62.94,56.92ZM45.06,56.92C46.2,56.92 47.13,56.01 47.13,54.88C47.13,53.76 46.2,52.85 45.06,52.85C43.92,52.85 43,53.76 43,54.88C43,56.01 43.92,56.92 45.06,56.92Z"
+            android:strokeColor="#00000000"
+            android:strokeWidth="1"/>
+</vector>
diff --git a/giang/src/main/res/drawable/ic_add_black_24dp.xml b/giang/src/main/res/drawable/ic_add_black_24dp.xml
new file mode 100644
index 0000000..9788f68
--- /dev/null
+++ b/giang/src/main/res/drawable/ic_add_black_24dp.xml
@@ -0,0 +1,9 @@
+<vector xmlns:android="http://schemas.android.com/apk/res/android"
+        android:width="30dp"
+        android:height="30dp"
+        android:viewportWidth="24.0"
+        android:viewportHeight="24.0">
+    <path
+        android:fillColor="#fff"
+        android:pathData="M19,13h-6v6h-2v-6H5v-2h6V5h2v6h6v2z"/>
+</vector>
diff --git a/giang/src/main/res/drawable/ic_launcher_background.xml b/giang/src/main/res/drawable/ic_launcher_background.xml
new file mode 100644
index 0000000..a0ad202
--- /dev/null
+++ b/giang/src/main/res/drawable/ic_launcher_background.xml
@@ -0,0 +1,74 @@
+<?xml version="1.0" encoding="utf-8"?>
+<vector
+        xmlns:android="http://schemas.android.com/apk/res/android"
+        android:height="108dp"
+        android:width="108dp"
+        android:viewportHeight="108"
+        android:viewportWidth="108">
+    <path android:fillColor="#008577"
+          android:pathData="M0,0h108v108h-108z"/>
+    <path android:fillColor="#00000000" android:pathData="M9,0L9,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,0L19,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,0L29,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,0L39,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,0L49,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,0L59,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,0L69,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,0L79,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M89,0L89,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M99,0L99,108"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,9L108,9"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,19L108,19"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,29L108,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,39L108,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,49L108,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,59L108,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,69L108,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,79L108,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,89L108,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M0,99L108,99"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,29L89,29"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,39L89,39"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,49L89,49"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,59L89,59"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,69L89,69"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M19,79L89,79"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M29,19L29,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M39,19L39,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M49,19L49,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M59,19L59,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M69,19L69,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+    <path android:fillColor="#00000000" android:pathData="M79,19L79,89"
+          android:strokeColor="#33FFFFFF" android:strokeWidth="0.8"/>
+</vector>
diff --git a/giang/src/main/res/drawable/shape.xml b/giang/src/main/res/drawable/shape.xml
new file mode 100644
index 0000000..f3b2d55
--- /dev/null
+++ b/giang/src/main/res/drawable/shape.xml
@@ -0,0 +1,9 @@
+<?xml version="1.0" encoding="utf-8"?>
+<shape xmlns:android="http://schemas.android.com/apk/res/android"
+    android:shape="rectangle">
+    <solid android:color="#eeffffff" />
+    <corners android:bottomRightRadius="8dp"
+        android:bottomLeftRadius="8dp"
+        android:topRightRadius="8dp"
+        android:topLeftRadius="8dp"/>
+</shape>
\ No newline at end of file
diff --git a/giang/src/main/res/drawable/student.jpg b/giang/src/main/res/drawable/student.jpg
new file mode 100644
index 0000000..844f33e
Binary files /dev/null and b/giang/src/main/res/drawable/student.jpg differ
diff --git a/giang/src/main/res/drawable/user.png b/giang/src/main/res/drawable/user.png
new file mode 100644
index 0000000..4e652d0
Binary files /dev/null and b/giang/src/main/res/drawable/user.png differ
diff --git a/giang/src/main/res/layout/activity_add_new_student.xml b/giang/src/main/res/layout/activity_add_new_student.xml
new file mode 100644
index 0000000..7e980b5
--- /dev/null
+++ b/giang/src/main/res/layout/activity_add_new_student.xml
@@ -0,0 +1,50 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+              xmlns:app="http://schemas.android.com/apk/res-auto"
+              xmlns:tools="http://schemas.android.com/tools"
+              android:layout_width="match_parent"
+              android:layout_height="match_parent"
+              android:orientation="vertical"
+              android:background="@drawable/student"
+              tools:context=".AddNewStudent">
+
+    <EditText
+            android:id="@+id/edtName"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/txtName"
+            android:inputType="text"
+            android:layout_margin="@dimen/layout_margin_activity_add_new_student"
+            android:background="@drawable/shape"
+            android:padding="@dimen/padding_hint_text"
+    />
+    <EditText
+            android:id="@+id/edtAge"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/txtAge"
+            android:inputType="number"
+            android:layout_marginLeft="@dimen/layout_margin_activity_add_new_student"
+            android:layout_marginRight="@dimen/layout_margin_activity_add_new_student"
+            android:background="@drawable/shape"
+            android:padding="@dimen/padding_hint_text"
+    />
+    <EditText
+            android:id="@+id/edtPhone"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:hint="@string/txtPhone"
+            android:inputType="number"
+            android:layout_margin="@dimen/layout_margin_activity_add_new_student"
+            android:background="@drawable/shape"
+            android:padding="@dimen/padding_hint_text"
+    />
+    <Button
+            android:id="@+id/btnAddAStudent"
+            android:layout_width="wrap_content"
+            android:layout_height="wrap_content"
+            android:text="@string/btnAdd"
+            android:layout_gravity="center"
+    />
+
+</LinearLayout>
\ No newline at end of file
diff --git a/giang/src/main/res/layout/activity_main.xml b/giang/src/main/res/layout/activity_main.xml
new file mode 100644
index 0000000..e985010
--- /dev/null
+++ b/giang/src/main/res/layout/activity_main.xml
@@ -0,0 +1,17 @@
+<?xml version="1.0" encoding="utf-8"?>
+<androidx.coordinatorlayout.widget.CoordinatorLayout
+         xmlns:android="http://schemas.android.com/apk/res/android"
+         xmlns:app="http://schemas.android.com/apk/res-auto"
+         xmlns:tools="http://schemas.android.com/tools"
+         android:layout_width="match_parent"
+         android:layout_height="match_parent"
+         tools:context=".MainActivity">
+
+    <fragment
+            android:id="@+id/fragment"
+            android:name="com.example.l7thu6.StudentFragment"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+    </fragment>
+
+</androidx.coordinatorlayout.widget.CoordinatorLayout>
\ No newline at end of file
diff --git a/giang/src/main/res/layout/fragment_student.xml b/giang/src/main/res/layout/fragment_student.xml
new file mode 100644
index 0000000..81ce343
--- /dev/null
+++ b/giang/src/main/res/layout/fragment_student.xml
@@ -0,0 +1,24 @@
+<?xml version="1.0" encoding="utf-8"?>
+<FrameLayout xmlns:android="http://schemas.android.com/apk/res/android"
+             xmlns:tools="http://schemas.android.com/tools"
+             android:layout_width="match_parent"
+             android:layout_height="match_parent"
+             android:background="@drawable/student"
+             tools:context=".StudentFragment">
+
+    <androidx.recyclerview.widget.RecyclerView
+            android:id="@+id/listStdudent"
+            android:layout_width="match_parent"
+            android:layout_height="match_parent">
+    </androidx.recyclerview.widget.RecyclerView>
+
+    <com.google.android.material.floatingactionbutton.FloatingActionButton
+            android:id="@+id/btnAdd"
+            android:layout_width="wrap_content"
+            android:layout_height="match_parent"
+            android:layout_gravity="bottom|end"
+            android:layout_margin="@dimen/margin_button_add"
+            android:src="@drawable/ic_add_black_24dp"
+    />
+
+</FrameLayout>
\ No newline at end of file
diff --git a/giang/src/main/res/layout/item_student.xml b/giang/src/main/res/layout/item_student.xml
new file mode 100644
index 0000000..08f0f48
--- /dev/null
+++ b/giang/src/main/res/layout/item_student.xml
@@ -0,0 +1,42 @@
+<?xml version="1.0" encoding="utf-8"?>
+<LinearLayout xmlns:android="http://schemas.android.com/apk/res/android"
+    android:orientation="horizontal"
+    android:layout_width="match_parent"
+    android:background="@color/white"
+    android:layout_height="wrap_content">
+
+    <ImageView
+        android:layout_width="@dimen/layout_ic_user"
+        android:layout_height="@dimen/layout_ic_user"
+        android:src="@drawable/user"
+        />
+    <LinearLayout
+        android:layout_width="match_parent"
+        android:layout_height="wrap_content"
+        android:orientation="vertical"
+        >
+        <TextView
+            android:id="@+id/txtName"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/txtName"
+            android:textStyle="bold"
+            android:textSize="@dimen/text_size_txtName"
+            />
+        <TextView
+            android:id="@+id/txtAge"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/txtAge"
+            android:textSize="@dimen/text_size_txtAge_txtPhone"
+            />
+        <TextView
+            android:id="@+id/txtPhone"
+            android:layout_width="match_parent"
+            android:layout_height="wrap_content"
+            android:text="@string/txtPhone"
+            android:textSize="@dimen/text_size_txtAge_txtPhone"
+            />
+
+    </LinearLayout>
+</LinearLayout>
\ No newline at end of file
diff --git a/giang/src/main/res/mipmap-anydpi-v26/ic_launcher.xml b/giang/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
new file mode 100644
index 0000000..bbd3e02
--- /dev/null
+++ b/giang/src/main/res/mipmap-anydpi-v26/ic_launcher.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/giang/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml b/giang/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
new file mode 100644
index 0000000..bbd3e02
--- /dev/null
+++ b/giang/src/main/res/mipmap-anydpi-v26/ic_launcher_round.xml
@@ -0,0 +1,5 @@
+<?xml version="1.0" encoding="utf-8"?>
+<adaptive-icon xmlns:android="http://schemas.android.com/apk/res/android">
+    <background android:drawable="@drawable/ic_launcher_background"/>
+    <foreground android:drawable="@drawable/ic_launcher_foreground"/>
+</adaptive-icon>
\ No newline at end of file
diff --git a/giang/src/main/res/mipmap-hdpi/ic_launcher.png b/giang/src/main/res/mipmap-hdpi/ic_launcher.png
new file mode 100644
index 0000000..898f3ed
Binary files /dev/null and b/giang/src/main/res/mipmap-hdpi/ic_launcher.png differ
diff --git a/giang/src/main/res/mipmap-hdpi/ic_launcher_round.png b/giang/src/main/res/mipmap-hdpi/ic_launcher_round.png
new file mode 100644
index 0000000..dffca36
Binary files /dev/null and b/giang/src/main/res/mipmap-hdpi/ic_launcher_round.png differ
diff --git a/giang/src/main/res/mipmap-mdpi/ic_launcher.png b/giang/src/main/res/mipmap-mdpi/ic_launcher.png
new file mode 100644
index 0000000..64ba76f
Binary files /dev/null and b/giang/src/main/res/mipmap-mdpi/ic_launcher.png differ
diff --git a/giang/src/main/res/mipmap-mdpi/ic_launcher_round.png b/giang/src/main/res/mipmap-mdpi/ic_launcher_round.png
new file mode 100644
index 0000000..dae5e08
Binary files /dev/null and b/giang/src/main/res/mipmap-mdpi/ic_launcher_round.png differ
diff --git a/giang/src/main/res/mipmap-xhdpi/ic_launcher.png b/giang/src/main/res/mipmap-xhdpi/ic_launcher.png
new file mode 100644
index 0000000..e5ed465
Binary files /dev/null and b/giang/src/main/res/mipmap-xhdpi/ic_launcher.png differ
diff --git a/giang/src/main/res/mipmap-xhdpi/ic_launcher_round.png b/giang/src/main/res/mipmap-xhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..14ed0af
Binary files /dev/null and b/giang/src/main/res/mipmap-xhdpi/ic_launcher_round.png differ
diff --git a/giang/src/main/res/mipmap-xxhdpi/ic_launcher.png b/giang/src/main/res/mipmap-xxhdpi/ic_launcher.png
new file mode 100644
index 0000000..b0907ca
Binary files /dev/null and b/giang/src/main/res/mipmap-xxhdpi/ic_launcher.png differ
diff --git a/giang/src/main/res/mipmap-xxhdpi/ic_launcher_round.png b/giang/src/main/res/mipmap-xxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..d8ae031
Binary files /dev/null and b/giang/src/main/res/mipmap-xxhdpi/ic_launcher_round.png differ
diff --git a/giang/src/main/res/mipmap-xxxhdpi/ic_launcher.png b/giang/src/main/res/mipmap-xxxhdpi/ic_launcher.png
new file mode 100644
index 0000000..2c18de9
Binary files /dev/null and b/giang/src/main/res/mipmap-xxxhdpi/ic_launcher.png differ
diff --git a/giang/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png b/giang/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png
new file mode 100644
index 0000000..beed3cd
Binary files /dev/null and b/giang/src/main/res/mipmap-xxxhdpi/ic_launcher_round.png differ
diff --git a/giang/src/main/res/values/colors.xml b/giang/src/main/res/values/colors.xml
new file mode 100644
index 0000000..9986feb
--- /dev/null
+++ b/giang/src/main/res/values/colors.xml
@@ -0,0 +1,7 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+    <color name="colorPrimary">#008577</color>
+    <color name="colorPrimaryDark">#00574B</color>
+    <color name="colorAccent">#D81B60</color>
+    <color name="white">#ffff</color>
+</resources>
diff --git a/giang/src/main/res/values/dimens.xml b/giang/src/main/res/values/dimens.xml
new file mode 100644
index 0000000..b379e34
--- /dev/null
+++ b/giang/src/main/res/values/dimens.xml
@@ -0,0 +1,10 @@
+<?xml version="1.0" encoding="utf-8"?>
+<resources>
+
+    <dimen name="layout_ic_user">60dp</dimen>
+    <dimen name="text_size_txtName">20sp</dimen>
+    <dimen name="text_size_txtAge_txtPhone">14sp</dimen>
+    <dimen name="margin_button_add">10dp</dimen>
+    <dimen name="layout_margin_activity_add_new_student">20dp</dimen>
+    <dimen name="padding_hint_text">7dp</dimen>
+</resources>
\ No newline at end of file
diff --git a/giang/src/main/res/values/styles.xml b/giang/src/main/res/values/styles.xml
new file mode 100644
index 0000000..5885930
--- /dev/null
+++ b/giang/src/main/res/values/styles.xml
@@ -0,0 +1,11 @@
+<resources>
+
+    <!-- Base application theme. -->
+    <style name="AppTheme" parent="Theme.AppCompat.Light.DarkActionBar">
+        <!-- Customize your theme here. -->
+        <item name="colorPrimary">@color/colorPrimary</item>
+        <item name="colorPrimaryDark">@color/colorPrimaryDark</item>
+        <item name="colorAccent">@color/colorAccent</item>
+    </style>
+
+</resources>