A Google Slides add-on, you can add formative assessments and interactive questions to your presentations right from Google Slides.
Go to Google Slides. Open a Google Slides presentation.*
Select "Add-ons" on the Toolbar.
Select "Peardeck."
Create Your Own Interactive Presentation with Formative Assessments
Go to drive.google.com and select "New," "File Upload," then select the PowerPoint file.
Go to a Google Slides presentation, select "Import," and add PowerPoint slides.