I've been teaching since 1998. Currently I am teaching Honors and Medical Biology, but have taught many of the science subjects.
I tend to begin with direct instruction (with a 10-12 min max on notes), then break up the instruction with mini-activities (pair-share, writing, some sort of interactive notebook activity). Then I use labs and other activities, usually one major activity per block.
I have a Masters in Curriculum and Instruction
I also maintain a website for my students...www.EspinosaScience.com