Lockstep Makes Organic Chemistry Draw Its Arrows

Field notes

Learners select mechanisms such as SN1/SN2, E1/E2, Grignards, aldols, and aromatics, then draw arrows and structures on a chemistry-specific canvas. The interface includes 30-degree bond snapping, stamped benzene rings, keyboard atom labels, and movable strokes. The page reports 111 problems across 37 subtopics, with four free problems and three graded drawings before the paid tier begins.