Large shared Google document maintained by LeighAnn Tomaswick of Kent State University. Includes many simulations in biology and chemistry. Many are more suitable for K-12.
From the University of Utah, this site includes a few simulations of core lab methods, as well as a larger body of classroom materials. Some content requires Adobe Flash.
Database of research protocols in a variety of life science fields. It contains protocols contributed by worldwide researchers as well as links to web protocols hosted by worldwide research labs, biotech companies, personal web sites.
Resource guide by Kristen Zuloaga at Albany Medical College with lots of suggestions both for teaching and "things to do" for lab staff who are now working at home.