Duden - Einfach Klasse in Deutsch - 3. und 4. Klasse (ドイツ語でシンプルクラス - 3・4学年, Japan) is a German language learning game for Nintendo DS. It is designed to help children in the 3rd and 4th grades learn German. The game features a variety of activities such as crosswords, word searches, and spelling tests to help players learn the language. Players can also practice their pronunciation and grammar in conversation mode. The game includes a dictionary and a notebook to help players learn new words and phrases. There is also a quiz mode to test players' knowledge. Duden - Einfach Klasse in Deutsch - 3. und 4. Klasse is an interactive and fun way to help children learn the German language.