The latest issue of the UFT newspaper had an article by Rhonda Rosenberg with the title "Teacher demos best for math instruction." The research is based on 1st graders and it was found that teacher directed instruction was much more effective than student centered lessons, group work and incorporation of music and movement.
I taught high school for years and have been teaching college for over 10 years and have found this to be true for older students as well. Time is used more effectively when the teacher demonstrates. The work is presented in a clearer manner and the students have a good model to follow on their own when they leave the classroom.
I remember talking to an English teacher. She and I were both laughing at the rave review the Principal had given us when he walked in to the room and saw the kids working in groups. What he didn't see was the kids fooling around and doing nothing until he appeared. He didn't see us walking around from group to group getting them to put away their phones and get back on target. He didn't see the 20 minutes of real instruction prior to his visit. I guess that was a good thing. He wouldn't have liked the chalk and talk that was going on. He wouldn't have liked the kids not talking. He wouldn't have realized that was where the learning was taking place.
(picture from Canstruction exhibit at Brookfield Place. Wonderful sculptures made of food cans which are donated to food pantries before Thanksgiving)