| 2009 | HCI | Designing a Peer Reviewing Tool on Lecture Video with Handwritten Annotation. | Hironori Egi, Shotaro Houri, Yukari Kato, Tatsuya Terada, Wataru Tsukahara, Masaki Nakagawa |
| 2009 | ICALT | FD Commons: E-Teaching Portfolio to Enable an Ubiquitous Peer Reviewing Process. | Yukari Kato, Shotaro Houri, Wataru Tsukahara, Hironori Egi, Masaki Nakagawa |
| 2007 | ICALT | Long-term Memory of Foreign-word Learning by Short Movies for iPods. | Satoko Amemiya, Kazunori Hasegawa, Keiichi Kaneko, Haruko Miyakoda, Wataru Tsukahara |
| 2007 | ICALT | Reach: an Awareness Rich CSCL Text Chat Tool with Real-time Key Typing Display. | Wataru Tsukahara, Zhang Zisheng, Shingo Akamatsu, Fumihiko Anma, Toshio Okamoto |
| 2005 | ICALT | System Development and Practice of e-Learning in Graduate School. | Kazuya Seki, Wataru Tsukahara, Toshio Okamoto |
| 2001 | CHI | Responding to subtle, fleeting changes in the user's internal state. | Wataru Tsukahara, Nigel Ward |
| 2000 | Interspeech | Evaluating responsiveness in spoken dialog systems. | Wataru Tsukahara, Nigel Ward |
| 1998 | Interspeech | An algorithm for choosing Japanese acknowledgments using prosodic cues and context. | Wataru Tsukahara |