Cell mission map
Cell Explorer
Explore an original cell diagram and route cellular tasks to the structures that do the work.
8 missions · Foundation · Untimed
Biology
Plant and animal cell structures and selected functions.
2 activities · 14 guided missions · No account needed
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Applied reasoning
Living Systems
Six applied problems with plausible alternatives and worked explanations.
6 missions · Stretch · Untimed
Practice, with a little more purpose.
Work without a countdown. Try the model, use a hint, then read the explanation. Checkpoints and practice records stay on your device. Teaching tools create shareable activity playlists and printable worksheets with answer keys.
These are original practice activities, not an accredited course or a secure assessment. Difficulty labels are editorial, not formal grade alignment. Science activities use explicitly simplified models. Playing requires JavaScript; this directory does not. See each activity's reference and model limits.