If you do not have PowerPoint installed on your device, you can still open the resources without paying to install Microsoft Office.
However, you will need to be connected to the internet to use the resources.
1. Go to the free online PowerPoint browser: https://office.live.com/start/PowerPoint.aspx
2. Sign in to your Microsoft account (outlook.com, hotmail.com, live.com or msn.com). Or create a new account for free.
3. Drag and drop the interactive file to upload, or click on the ‘Upload and open‘ link on the right under the slide templates.
4. Click on ‘Present’ in the top right corner.
Be aware that the files will not look as high-res using this web browser.