Özet:

The purpose of the study was to investigate preservice mathematics teachers’ using of virtual manipulatives to teach algebra through a lesson study. 17 preservice mathematics teachers voluntarily participated in the study. Phenomenological approach has been used as a qualitative method of research. The preservice mathematics teachers created lesson plans about the middle school algebra topics using virtual manipulatives. Interviews were used as a way to collect data to gain information about their using of virtual manipulatives to teach algebra. The findings of the study showed that preservice mathematics teachers revealed positive and negative decisions about algebra teaching by using virtual manipulatives and they found the most of the virtual manipulatives effective in exploring and visualizing algebraic relations. As a result, the lesson study has played an important role in preservice teachers’ preparing a lesson plan for teaching algebra and integrating the virtual manipulatives into the stages of a lesson plan.

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