Build-a-Tree Game in Action (IMAGE) Harvard University Caption Multi-touch tables can recognize and accommodate several users at once, allowing students to collaborate and learn while they play an engaging game. Credit Photo courtesy of Michael Horn, Northwestern University 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.