On this page you can find a free downloadable document with a full explanation of the possessive 's' and 'of'. Divide the 12 phrases into 2 categories. Click on a palate to color a brush and then click on a word/phrase that belongs to this category. When you’ve finished click ‘submit’ to check your answers. Then click on the ‘download’ icon to read the explanation. Finally go to page 3 for more practice.