LIN, C.-P., W. CHEN, C.-C. LIN, Y.-T. SU, and W. XIE. “GROUP SCRIBBLES TO SUPPORT ‘FRACTION’ COLLABORATIVE LEARNING IN A PRIMARY SCHOOL”. Research and Practice in Technology Enhanced Learning, vol. 9, no. 3, Aug. 2022, pp. 461-73, doi:10.58459/rptel.2014.9461-473.