Classroom Management is one of those things that is so hard to "box". There is no "one way" to maintain 'control' of a class. Additionally, circumstances change from day to day depending on student's whims, experiences, emotions on any given day.
My solution to classroom management is 1-Cover Behavioral Expectations on Day ONE and 2- to be crystal clear about the material we are working on and to present new units/projects in a way that draws them in and ties in with what they already know. Student work should be compelling and tied to clear, attainable goals and objectives. If a tool is required, demonstrate it and/or have a student demonstrate with you. Giving students some degree of ownership is key in the classroom...Any perception of you as "Sage on the Stage" could backfire.
Ultimately, you will have to feel your way. It's about building a Culture in the classroom of mutual respect and responsibility. I appeal to student's sense of right/wrong/dignity/respect/fairness.
That said, some students come with tough skin and a goal to throw teachers off-task. Simply don't tolerate it-redirect-but always reprimand in private, if you must. Give full attention to the behaviors you want to see. The behaviors you get in the classroom will always be the ones you 'award' the most attention. Best of luck!
I don't have a management system, but I do have some suggestions. Here's my blogpost on what I've learned over the years about managing behaviour. I hope it helps.
Thank you all so much!! This is very helpful information and a lot of it I have never thought about before not having that much experience myself. I love all of these ideas and will have to try to mesh them all and see what works for me when I get a chance. I appreciate all of your help!