demonstrations that actually get heard

For the last few weeks, I have been struggling with my sophomores. They have a very hard time staying focused long enough to hear my explanation or demonstration, then ask me a million questions about what they are supposed to be doing. Today, I did a screen recording for them with their assignment instructions. It was AWESOME. I only had one kid in two classes who still needed to ask for help. Now keeping them on task is a whole other issue...