The biggest strength by far is being able to see students' work. Most programs for math only show students' final answers, which leaves teachers to guess where the student went wrong. Since students are able to write on the slides, you are able to give them better feedback. You can see what they're doing as they're doing it so you can give them feedback in real time.
ANSWER KEY π Arc Measure
Plus, since it's in Google Slides, it's easy to make an answer key that can be shared with students after they've completed the work. This gives students a chance to reflect on their work and see where they made mistakes.
Pear Deck is extremely user-friendly and students can access the presentation from a link, so they don't have to make an account. This means they do not have to remember or keep track of additional login information.
Pear Deck lets you have your Do Now, Mini Lesson, Classwork, and Exit Ticket all in one place! And best of all, it's all tailored to your students needs and being able to provide individualized support to every single student.