I am always tring to find ways to engage most if not all of my students during the short "teaching time" I begin all my classes with. One suggestion from my principal was to try "Pair Share". I prefer to let the students tell me what they already know about what we are doing, especially since we meet only once a week and need to start with a review of what we learned last week. When I ask them, I usually get a few hands up and often the same ones. With pair share, the students turn to their designated partner (we have established this beforehand) and discuss whatever it is I ask.
After they discuss together, I then ask the entire class the question. Below you can see the response I now get! By having all students participate in a discussion with another student, they are all engaged and they also feel more confident in raising their hand to answer my question.