The UAbacus was recently featured in an article on app development at the UA.
Read more in the September 23 issue of UA @ Work.


This web site provides information on how to use a Cranmer abacus for computation.  The abacus is available from the American Printing House for the Blind. The UAbacus app was developed by Dr. L. Penny Rosenblum and the staff at the Office of Instruction and Assessment at The University of Arizona. The app is now available for free download from the iTunes App Store.

Use the links on the left to learn about abacus computation using the "logic" method.

Email comments, questions or suggestions to Dr. Rosenblum


6th grader uses abacus to compute a problem