1. Arora, M. L., Rho, Y. J., & Masson, C. (2013). Longitudinal study of online statics homework as a method to improve learning. Journal of STEM Education, 14(1), 36–44.
2. Burch, K. J. and Kuo, Y-J. (2010). Traditional vs. online homework in college algebra. Mathematics and Computer Education,44 (1), 53–63.
3. Butler, A. C., Marsh, E. J., Slavinsky, J. P., & Baraniuk, R. G. (2014). Integrating cognitive science and technology improves learning in a STEM classroom. Educational Psychology Review, 26, 331–340.
4. Cengage (2019). MindTap - The leading digital learning tool. [online]. Available at: https://www.cengage.com/mindtap/ [accessed 28 July 2019].
5. Centre for evaluation and monitoring, (2019). Effect size resources. [online]. Avaliable at: https://www.cem.org/effect-size-resources [accessed 26 Nov. 2019].