The study used the intervention mixed methods design to evaluate the technological, pedagogical and content knowledge (TPACK) of mathematics preservice teachers while doing their lesson planning and teaching with interactive whiteboards (IWBs). The method has the following parts: (1) qualitative data collection to establish the priority competencies for the intervention, (2) conducting a single-subject experimental design to equip the preservice teachers with technology-enhanced lessons and (3) final qualitative data collection on experiences in planning and teaching with IWBs. The results revealed that the TPACK framework reflects improvements in lesson planning and teaching demonstration skills of the preservice teachers. While the preservice teachers quickly responded to digitise their lesson activities, the formulation of lesson objectives is left behind. Thus, in lesson planning and teaching with IWBs, the pedagogical skills must align with the technological skills they expect to employ. Although the Philippine basic education is not fully implementing IWB technologies in the classroom, policymakers may want this technology to become part of the system.