Jennifer A. Cowley Wiebe, E., Minogue, J., Jones, M. G., Cowley, J., & Krebs, D. (2009). Haptic feedback and students' learning about levers: unraveling the effect of simulated touch. Computers & Education, 53(2), 667–676. https://doi.org/10.1016/j.compedu.2009.04.004