摘要:AbstractThis study's aim is to develop a valid and reliable evaluation instrument to define the believes according to using technology in mathematical teaching. The sample is formed with 216 candidate teachers. While forming a scale those steps are followed having item tool, taking expert opinion, implementation, computing validity and reliability, finalizing the scale. At the end of the analysis scale is formed with 31 items, four factors and four factors’ variance ratios are %44. Cronbach Alpha internal integrity coefficient is calculated as 0.895 for the whole scale. In line with findings “the belief scale according to using computer technology in mathematics teaching” is improved and it is decided as a valid and reliable evaluation instrument.