Erik Weitnauer, Indiana University (IMAGE) Indiana University Caption Erik Weitnauer of Graspable Inc. manipulates algebra equations on a screen using the educational technology startup's Graspable Math technology. Credit © IU Communications Usage Restrictions None License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.