Chemistry is a combination of the comprehension of scientific content and the application of mathematics to those concepts. My students have to be prepared to think deeply about difficult concepts the minute they step into my room. Starting the class with a relevant "Catalyst" helps them initiate their own thinking processes in preparation for a productive day in the same way that biological enzymes catalyze chemical reactions. During The Catalyst, I model my thinking process for how to approach a mathematical problem by having my students identify the key steps in the calculation and establish a foundation that students who struggle with math can fall back on when they're confused.
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.
At the beginning of each trimester students are given a checklist to track their own mastery. As they progress through the lessons, they mark off what they have completed, in addition to the grade they received on each lesson. This acts as planner, letting students know at any given moment what they have completed, and what is left for them to learn to finish the trimester.
To give students greater independence, there is an answer key for the practice problems of every lesson. I know what a lot of teachers are thinking at this point: what if the student just copy all their answers from the answer key? As an Algebra teacher told me when I asked them the same question before starting flipped mastery, they'll just fail the mastery quiz. It only takes a few correctional assignments for them to realize that the answer key is there to check answers, not copy them.