Information and Communication Technology (ICT) implementation in education is a national priority in Bhutan, particularly as it relates to the STEM disciplines. Researchers at Samtse College of Education introduced 19 experienced secondary school mathematics and physics teachers to The Geometers' Sketchpad and GeoGebra in two workshops. At the end of each, participants reported their impressions of the featured technology and its potential value in Bhutanese secondary schools. After the last session, participants were asked which technology is better suited for use in their classrooms and why. A crossover research design was used to mediate the small sample size. Data were analyzed using Frequentist and Bayesian statistical analysis methods. Findings support implementation of The Geometer's Sketchpad at both lower and higher secondary levels and GeoGebra at the higher secondary level. Overall, the participants favored The Geometer's Sketchpad, while also recommending use of GeoGebra in higher level mathematics and physics courses. This study recommends development and evaluation of technology assisted mathematics and physics curricular materials at the secondary level and professional development opportunities for teachers focused on implementation of these technologies in their classrooms.