PearDeck works with Google Slides as an Add On. When your teacher creates a Google Slides presentation they can use Pear Deck to insert questions, drawings, etc. for students to interact with the presentation.
Padlet is a landing page where students and teachers can share information via text, video, or pictures. This is a great tool to get feedback from students in a variety of ways. See the attached step by step directions on how to use Padlet.