There are only 4 rules in my classroom. The four rules are 1) Be respectful - I will always talk to students respectfully so there is no reason for students to talk to either myself of their peers with disrepect. 2) Always sit in your assigned seat - seating assignments are always projected in the front of the room so there is no reason to be confused about where to sit. No negotiations. 3) No talking during independent time - this doesn't need much explanation. 4) Technology is used for learning. Their devices should only be used to watch instructional videos otherwise it's too easy to get sucked into the vast abyss of the internet.
By allowing my students to assess other students' work and then providing them with a Student Lab Development Rubric to evaluate their own work, they learn to design and refine high-quality experimental procedures. The Student Lab Development Rubric is one of the tools I use to help students build the experiments they've created and then display results and lab analyses. When students are the ones dictating how they will conduct their experiments, they invest more fully in the activity and come to realize that science involves constant critical analysis and reiteration. I like to move conversations away from "right" and "wrong" and more towards how we can improve each component of our lab activities. Initially, some students feel uncomfortable identifying that their work isn't up to the high standards of the rubric, but over time most come to realize that this process helps them improve their final products and understand the underlying purpose behind labs.
Organizing labs that span over a number of classes requires a substantial amount of pre-planning. The benefits of proper Lab Documentation are potentially enormous for students. Lab Documentation ensures that I can follow students through every step of the lab process even when groups are completing different segments within varying timeframes. Students develop lab procedures on Google Docs, create charts/tables/graphs on Google Sheets, and compile lab portfolios on wikispaces. By hosting their work on Google Apps for Education, my students can easily collaborate with group mates and me on a lab activity over the course of a week or more. During this time, I can ask probing questions, offer insight on effective lab methods and tactics, work directly on their documents, and help students record their labs with media-capture tools. Being able to analyze video of the lab procedure next to the results it produced provides my students a great means to produce high-quality lab reports, which they can publish to the web and their group wikispace pages.
Keeping students motivated is very important in a self-paced course. Scholar Dollars is a strategy I developed to reward my students for working hard and making progress in the course. The concept of Scholar Dollars is pretty simple. Every time a student passes a Mastery Quiz, they receive five Scholar Dollars. Students receive 15 Scholar Dollars for passing a Level Test. Scholar Dollars can be used to buy school supplies, snacks, or even a pizza party. On random days, I switch up the payouts on Scholar Dollars - doubling the amount given, only paying for 100s on Mastery Quizzes or Level Tests, or giving all the Scholar Dollars earned on that day to one lucky student picked by lottery at the end of class.