Nearly all teachers today use PowerPoint or Google Slides presentations to accompany their synchronous lessons. At the same time, students have laptops, tablets, or smartphones open during face-to-face classes. This offers teachers the option of adding interactions to their lessons by inserting slides with questions, polls, or other activities after each new idea. A 50-minute class might have eight to 10 interactions that will help students retain the information. Plus, the teacher can read the class scores in real time so they know when students did not understand the topic well enough and should go back over it.