General look of WebWork performance software. 

Author would decide if +C is acceptable.  Immediate feedback.

Numerical answers with units.

Showing Hints

Graphing.  Can click to enlarge graph so you see (popup window)

Embedded calculator for help and JavaScript

Editing a question (the code Perl)

Use of pop-up menus

Don’t want students to know which are wrong in this case, so just indicate how many are wrong.

Instructor view… enrolling students, statistics page of how students are doing

Student progress

Library Browser