diff --git a/aula204/main.py b/aula204/main.py
new file mode 100644
index 0000000..053d372
--- /dev/null
+++ b/aula204/main.py
@@ -0,0 +1,17 @@
+import sys
+
+from PySide6.QtWidgets import QApplication, QWidget
+from ui_workerui import Ui_myWidget
+
+
+class MyWidget(QWidget, Ui_myWidget):
+    def __init__(self, parent=None):
+        super().__init__(parent)
+        self.setupUi(self)
+
+
+if __name__ == '__main__':
+    app = QApplication(sys.argv)
+    myWidget = MyWidget()
+    myWidget.show()
+    app.exec()
diff --git a/aula204/ui_workerui.py b/aula204/ui_workerui.py
new file mode 100644
index 0000000..502d538
--- /dev/null
+++ b/aula204/ui_workerui.py
@@ -0,0 +1,69 @@
+# -*- coding: utf-8 -*-
+
+################################################################################
+## Form generated from reading UI file 'workerui.ui'
+##
+## Created by: Qt User Interface Compiler version 6.4.2
+##
+## WARNING! All changes made in this file will be lost when recompiling UI file!
+################################################################################
+
+from PySide6.QtCore import (QCoreApplication, QDate, QDateTime, QLocale,
+    QMetaObject, QObject, QPoint, QRect,
+    QSize, QTime, QUrl, Qt)
+from PySide6.QtGui import (QBrush, QColor, QConicalGradient, QCursor,
+    QFont, QFontDatabase, QGradient, QIcon,
+    QImage, QKeySequence, QLinearGradient, QPainter,
+    QPalette, QPixmap, QRadialGradient, QTransform)
+from PySide6.QtWidgets import (QApplication, QGridLayout, QHBoxLayout, QLabel,
+    QPushButton, QSizePolicy, QWidget)
+
+class Ui_myWidget(object):
+    def setupUi(self, myWidget):
+        if not myWidget.objectName():
+            myWidget.setObjectName(u"myWidget")
+        myWidget.resize(400, 300)
+        font = QFont()
+        font.setPointSize(40)
+        myWidget.setFont(font)
+        self.horizontalLayout = QHBoxLayout(myWidget)
+        self.horizontalLayout.setObjectName(u"horizontalLayout")
+        self.gridLayout = QGridLayout()
+        self.gridLayout.setObjectName(u"gridLayout")
+        self.label2 = QLabel(myWidget)
+        self.label2.setObjectName(u"label2")
+
+        self.gridLayout.addWidget(self.label2, 0, 1, 1, 1)
+
+        self.label1 = QLabel(myWidget)
+        self.label1.setObjectName(u"label1")
+
+        self.gridLayout.addWidget(self.label1, 0, 0, 1, 1)
+
+        self.button1 = QPushButton(myWidget)
+        self.button1.setObjectName(u"button1")
+
+        self.gridLayout.addWidget(self.button1, 1, 0, 1, 1)
+
+        self.button2 = QPushButton(myWidget)
+        self.button2.setObjectName(u"button2")
+
+        self.gridLayout.addWidget(self.button2, 1, 1, 1, 1)
+
+
+        self.horizontalLayout.addLayout(self.gridLayout)
+
+
+        self.retranslateUi(myWidget)
+
+        QMetaObject.connectSlotsByName(myWidget)
+    # setupUi
+
+    def retranslateUi(self, myWidget):
+        myWidget.setWindowTitle(QCoreApplication.translate("myWidget", u"Form", None))
+        self.label2.setText(QCoreApplication.translate("myWidget", u"L2", None))
+        self.label1.setText(QCoreApplication.translate("myWidget", u"L1", None))
+        self.button1.setText(QCoreApplication.translate("myWidget", u"B1", None))
+        self.button2.setText(QCoreApplication.translate("myWidget", u"B2", None))
+    # retranslateUi
+
diff --git a/aula204/workerui.ui b/aula204/workerui.ui
new file mode 100644
index 0000000..882422d
--- /dev/null
+++ b/aula204/workerui.ui
@@ -0,0 +1,58 @@
+<?xml version="1.0" encoding="UTF-8"?>
+<ui version="4.0">
+ <class>myWidget</class>
+ <widget class="QWidget" name="myWidget">
+  <property name="geometry">
+   <rect>
+    <x>0</x>
+    <y>0</y>
+    <width>400</width>
+    <height>300</height>
+   </rect>
+  </property>
+  <property name="font">
+   <font>
+    <pointsize>40</pointsize>
+   </font>
+  </property>
+  <property name="windowTitle">
+   <string>Form</string>
+  </property>
+  <layout class="QHBoxLayout" name="horizontalLayout">
+   <item>
+    <layout class="QGridLayout" name="gridLayout">
+     <item row="0" column="1">
+      <widget class="QLabel" name="label2">
+       <property name="text">
+        <string>L2</string>
+       </property>
+      </widget>
+     </item>
+     <item row="0" column="0">
+      <widget class="QLabel" name="label1">
+       <property name="text">
+        <string>L1</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="0">
+      <widget class="QPushButton" name="button1">
+       <property name="text">
+        <string>B1</string>
+       </property>
+      </widget>
+     </item>
+     <item row="1" column="1">
+      <widget class="QPushButton" name="button2">
+       <property name="text">
+        <string>B2</string>
+       </property>
+      </widget>
+     </item>
+    </layout>
+   </item>
+  </layout>
+ </widget>
+ <resources/>
+ <connections/>
+</ui>