enhance learning experience by providing a student with a supplement
to the physical lab. Such laboratories allow students to perform
excercises as in an actual lab and to gather data for preparing
lab reports. To increase students' engagement and interest, they
are allowed to take wrong directions and, and then backtrack to
correctly perform the excercise. We developed a software framework
for rapid development of interactive Web-based virtual laboratories.
The framework was used to develop several introductory biology
laboratories and the labs were used in actual classroom instruction.