The fastest finishing times are posted online. A chemistry resource for high school students, teachers, and homeschoolers. This is a free online learning activity for chemistry students. The goal is to drag element symbols onto their correct positions in the periodic table. Questions keyed to objectives.
Teacher selects only objectives appropriate for class.
Grading and assignment selection done online. Retired college professor offers help for high school and college chemistry students, and programs for high school or first year of college. A collection of javascript tests and numerical problems pertaining to chemistry. Help build the largest human-edited directory on the web.