[Draggable is reusable example]

Please label all hydrogen atoms.

[Complex grading example]

Describe carbon molecule in LCAO-MO.

[Many draggables per target]

Move two Stars and three Ants to most left target and one Label3 and four Label2 to most right target.

[Draggables can be placed anywhere on base image]

Place -Grass- in the middle of the image and -Ant- in the right upper corner.

[Another anyof example]

Please identify the Carbon and Oxygen atoms in the molecule.

[Exact number of draggables for a set of targets.]

Drag two Grass and one Star to first or second positions, and three Cloud to any of the three positions.

[As many as you like draggables for a set of targets.]

Drag some Grass to any of the targets, and some Stars to either first or last target.