This week your son has learnt the names of some rooms in a house. He should have brought home translation and unscrambling tasks to show you, which illustrate the three genders.
He can practise and add to his knowledge by watching this video:
In this beginner German lesson you will learn the German names for certain rooms in a house. The words include the German for kitchen, bathroom, bedroom, office, sitting room, attic, cellar, etc. In the lesson, each word or phrase is shown in German (and English) so you the learner know exactly what you are learning.