I work with two groups of first grade boys who have limited self-regulation, including volume control, even when they are in a small group and remind them of our rules. My most successful session was based on this great book by Julia Cook. They were not able to estimate 6 inches which I had guessed so my worksheet has a ruler then they draw their hand (pinky to thumb) and write about where they should be using their 6-inch voice. The books has a built in "practice" for the 5 levels of volume from whisper to outside. I wish I had used this in my second session so I could refer to it each week. I plan to use a replica of the handout as a reminder for my next session.