There is no 's in Spanish. Instead of saying Irene's libro in Spanish you say: The book of Irene or El libro de Irene Write the phrases in Spanish
1. Esteban's books
1.
2. Margarita's pencils
2.
3. Dolores's folder
3.
4. Paco's friend
4.
5. Diego's sister
5.

Los libros se esteban
Los lapices de margarita
La carpeta de Dolore’s
El Amigo de Paco
La hermana de diego

First of all we may refer to the things in classroom in spanish as both los artículos del aula de clases  and los objetos de la clase  we will begin by looking at a picture containing several of these items. we will see them in sentences later to hear  their pronunciation and how they could be used in real contexts